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Dr. Coates is a veterinarian based in the other “Sunshine State” – that's Colorado to the rest of you – where she lives and plays with a varied range of animals. She shares her professional and personal experiences, Monday through Friday, here on petMD's blog, the Fully Vetted. Log in for your daily dose of her insight and wisdom.

 

How cold is too cold for our pets?

December 14, 2010 / (19) comments


It's cold today in Miami. OK, maybe not according to the standards held by anyone who happens to live north of Florida, but chilly for us nonetheless. This is perhaps why we’re so weird about our pets and cold weather. We're just not used to it, so we get a tad freaky about it.

 

As in this question asked by a Miami Herald reader, followed by my answer, published over the weekend in advance of this sub-freezing-temp cold front:

Q: I take care of a number of outdoor cats, who aren’t always around for me to bring in when it gets cold outside. When the news media tells us to bring all our pets indoors on chilly nights, I worry desperately for my babies. I’ve been wondering whether they’re suffering, and what your opinion is on what temperature is absolutely too low for cats.

A: I’ve often wondered the same. To what extent does inclement weather — hot, cold, windy or wet — truly affect the cats who make the out of doors their permanent homes? The answer will vary tremendously based on a variety of circumstances. Here’s a short list:

1. Overall health

2. Regular access to food and water

3. Familiarity with surroundings

4. Access to an appropriate shelter

All will play into how desperately lousy the weather can be before an animal’s health will be affected (the metric for suffering I’ve chosen to apply in this case).

So it is that a healthy, well-fed cat who lives under the crawl space of an old Coral Gables home may not care whether it’s 100 or 20 degrees outside; she’s always going to be comfortable. But the old girl who lives on your porch and sleeps in the bushes under your window may not fare so well if the temperature dips below fifty.

As you can see, there is no magic number on the thermometric scale that should lead anyone — except perhaps the meteorology people who seem to love to talk about pets — to conclude that a 40 degree night is deadly.

Indeed, it could be for a debilitated animal, but truth be told, only the sickest and most exposed animals are seriously at risk, as long as temperatures remain above freezing (32°F). The rule of thumb is that when temps dip below 32 degrees, frostbite and severe hypothermia become more pressing concerns.

Thankfully, frozen nights are very few and far between around these parts, so I would tend to think your outdoor cats are finding themselves cozy places to hide that would likely surprise you for their ingenuity.

If optimum comfort is what you seek, nothing beats indoor living. But if this proves elusive, keeping cats sheltered from the cold and wind is doable in the confines of your own back yard. Taking a simple bale of hay to a windless spot should provide ample opportunity for winter-long safety.

***

I normally get at least a handful of e-mails after any given weekend's Miami Herald column. This one, however, earned me about twenty, most of which were decrying the confusion my words cultivated in a community already given to allowing their poor pets to freeze in this inclement weather. My inability to commit to a hard and fast temperature at which animals absolutely cannot live outside was even considered "animal welfare unfriendly."

Wow. Who knew I'd get so much heat for this topic? But then, I guess I shouldn't be too surprised. After all, the AVMA (American Veterinary Medical Association) went through several revisions to their in-flight acclimation standards for pets before managing to find one that suited everyone. Sticking to a hard and fast safe temperature zone, it would seem, eludes all of us. It seems you'll never get everyone to agree.

Still, I thought it would be fun to take this Herald column and hand it over to my more cold-hardened readers so that I might perhaps learn where in the heck I went wrong. But maybe — just maybe — you'll think I wasn't too hard on our pets; your call.

 

 

Dr. Patty Khuly

 

P.S. - I'll take all your outdoor pet cold-weather tips, too, while you're at it. I need more fodder in case I'm ever tasked with a cold weather column again.

 

 

Pic of the day: "In, please!" by Andrew Currie

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COMMENTS (19)
1
by on 12/14/2010 03:16am

I'm wishing the young dogs would come in from chasing whatever it just was so I could close up the dog door. Windchills are in the negative digits at the moment.

A good way to provide shelter for outdoor cats is to make a cave with 3-4 hay bales around a largish plastic pet carrier (door removed) that is well-bedded with hay or straw, and up off the ground a bit with either straw insulation or something like foamboard. Set up leeward of a building or wall and face the entrance south or east. Tip the carrier slightly towards the door, and drill a few small drain holes on the bottom right near the door so rain won't puddle.

And be sure they have plenty of high-fat food and replace *warm* water a couple times a day. Dehydration predisposes to hypothermia.

My "barn" cats have a sekrit entrance to the basement, somewhere in the furnace room. Tonight is the first time I've found them inside this winter. It has to get awfully cold before they come in. But it's quite toasty down there near the furnace. They can come up here if they want.

2
Commenting
by on 12/14/2010 06:19am

Just leaving a comment so I can click the "notify me via email" box.

by on 12/14/2010 11:56am

me too!

3
Cold weather and pets
by on 12/14/2010 06:21am

Both of my furry kids are house cats and live inside so I know they are warm enough.

As for outdoor pets(I have none) too cold for me would in my opinion be to cold for them.

4
by on 12/14/2010 07:07am

It all depends on what they're used to. Feral and barn cat populations exist in Canada... clearly cats can do just fine in very cold environments. Do they live longer if kept inside and warm? Of course, but I bet cold isn't one of the leading causes of death even there. The reason you can't set a definite scale is not because you are dodging animal welfare issues, it's because it's like asking how much food a cat should it... it depends on several different factors. 1/2 cup is too little for some, too much for others... 20 degrees is deadly for some, not a problem for others.

Whatever the true absolute lowest temperature cats can be safe at is... Miami doesn't even approach it. Is it possible for a cat to die of exposure even in a Miami winter? Sure. But I'd be more worried about the cars, dogs, other predators, poison, etc. If you want your cats to live guaranteed long lives relatively free of risk and suffering, keep them inside! If you feel strongly that they need to roam for a good quality of life, accept that they may face frostbite and bumpers.

5
by on 12/14/2010 08:01am

We live in a very rural part of North Carolina (its in the teens this morning with a windchill around 0 degrees and it's not supposed to get above the low to mid 30s). Anyway, there are lots of strays around here, dogs and cats alike and they always seem to know where to go to stay warm. My girls are indoor dogs however.

Like the good doc said, there are lots of factors that contribute to how animals fair outside. This morning, my older lab/border collie mix went outside, piddled and was whining at the door less than a minute later when I step outside to monitor my girls as they go off lead to do their business. My younger lab/something went out and ran off for a minute or two. I invited my old girl to come back out as we waited for the younger and she thought about it but decided against it (usually she's like super glued to my side!).

For everyday situations when the animals are not kenneled and have free roam, there shouldn't be much of an issue. Watch your animals, know their behaviors and keep them as comfie and warm as possible. However on airlines and shipping situations, the animals do not have the option to bunker down somewhere warmer or to get out into the sunshine to warm up. There should be mostly hard and fast rules in place for their safety. As flying public, I probably wouldn't know what the cargo hold area they are kept in is like or how it reacts to hot or cold whether (becoming an icebox or oven), but I expect the industry to know and if I'm paying almost as much as it costs for a seat on the plane to ship my dog, I expect it to be safe.

6
Too cold for us
by on 12/14/2010 09:03am

Too cold for them, unless you have a Great Py. or one of the other, happy in the cold Pups. Our Beyonca, loves the cold, but she let us know, when she is ready to come in, Beyonca is a rescue, wt. 125 pds. Sweet-kind-careing, Great Py. are something cool, read-up-them.

7
by on 12/14/2010 09:41am

I loved seeing the title of this post in my email this morning. In WI the wind chill has gotten down to -25 over the past few days (it's currently a balmy -5 with -10 wind chill).

All of the cats in my life (two of my own, three at my parents' house) would like to vote for: the approximate temperature on top of "my" heating pad or wedged as close to a space heater as possible. Indoor only cats have such a difficult life.

We have a population of rescue greyhounds and I did see one out walking and she looked so cold, even with a sweater on. Dogs tend to demand short walks this time of year. People I know in rural areas with barn cats do pretty much exactly what H. Houlahan has said and the cats usually do fine.

8
As the good doctor said
by on 12/14/2010 10:15am

it depends on a lot of factors. One thing people forget is that animals get acclimated to weather, just like humans.
So while those of us up north snicker when the thin bloods in Florida complain about the "cold" weather hovering in the 40s, while we cope with zero degree wind chills, we have to remember that animals get used to local climate just like humans, and will act accordingly.
I liked the suggestion of building a hay bale shelter for outside dogs and cats, the thickness of the bale will insulate against cold winds and temps, and body heat will warm up the inside. That would work in any climate, I would think.

9
by on 12/14/2010 11:10am

My pets are indoor pets; because there are just to may dangers outside for them. I do feel sorry for all the unwanted stray cats that are left to fend for themselves in cold temperetures like we have been having in the North. It is very sad that any little domestic creature should have to suffer from being homeless in the outdoors. Even though I keep my pets indoors, this was a good article for any pet lover in case they should come across a stray animal in the inclement weather.

10
by on 12/14/2010 04:08pm

We just adopted a older cat,one eyed kitty- he stayed outdoors only until we got him. It snowed that night. So glad he is safe and warm in my home.

11
Outdoor pets
by on 12/14/2010 04:48pm

First and foremost my beagles are inside. All are rescued from horrible conditions and most were chain dogs. If I am not willing to stay out in the freezing cold (0 to -5) then I dont expect them to stay in the cold. I am well aware they are pets but I feel it's the humane way to go.Sure pets may get acclimated to their climate to some degree but when it's 2 with subzero wind chills and all they have is a little bit of straw to stay warm it's just not right. But if you must have an outside animal the dog house heater/ ac combo unit. CozyWinters.com It heats to a cozy 62-90 degrees and is safe for dog houses. (made for them) Once you've seen a dog frozen to death and rescued the remaining dogs and saw them lose parts of their ears to frostbite you never want to see another outside dog for any reason. Not ever!!!!!

12
Cats and cold weather
by on 12/14/2010 06:13pm

First of all, I think that in this instance dogs and cats are completely different stories. Cats have an amazing ability to find a place to nestle. One of mine refused to come in before Hurricane Francis and came home none the worse for wear when it was over. I was frantic. She was not.
Up north, my cats went outside and refused to sleep in the house even if it was ten degrees. I think they know where they are going to sleep ahead of time.
Here my ferals tend to come in at night, but the cold weather the last couple of nights hasn't fazed them...or the dog...in the least.
I think the hot weather is harder on them than the cold.

13
Silly animals!!
by on 12/14/2010 07:49pm

It's hovering around single digits here in Ill. today. I have two dogs and two cats. My older dog(lab mix) and cat(skinny, black 8 yr. old) go outside, do their business and come right back in when it's cold or wet. I feel they are very sensible animals. However, my corgi/chow mix goes out in the backyard and will stay out there as long as I'll let him. I forgot about him yesterday and after about half an hour, I went out and he was happily laying in the snow! My other cat has short, but thick, dense fur, he will go outside and be gone for HOURS! It makes me crazy so I made him stay inside today. He is pissed! He peed on the carpet 6 feet in front of me! But as I informed him, my brain is bigger and he must bow to my better judgement! Really he'd be just fine, he's figured out how to climb into my attic, but I can't take worrying about him all day!

14
weather
by on 12/15/2010 02:28am

I think your guidelines are a good start, but you didn't mention coat condition or density, and temperature changes. If an animal adapts gradually as seasons change, most healthy ones will do ok. However a pampered pet who is lost or dumped may have great difficulty.
Hay is an excellent "nesting material" for most any pet or critter. Just remember to use cow-quality and save the horse hay for them. It's hard to find and very expensive in winter, when horses need it most!
A more critical need against inclemency is wind-break and dryness. Keep whatever shelter you make up off the ground, on some bricks and wood, or an old packing palette works well. Shelters can be made with tarps, old carriers, scrap sheet metal, or anything you can make a den-like structure with. Most feed bags will help with wind blocking. (For small animals you can even fill an old feed bag with hay and anchor it somewhere out of the wind and it will work well.)
Also there are variations by species and breed. Horses LOVE 40 degrees and below, unless they are body-clipped for shows! And I agree that cats are better at finding adequate places than dogs, unless they are caring for a litter. Lots of kittens get separated from mom during Spring floods here in Texas. (Another consideration here is providing shade and lots of fresh water in the heat of summer.)
And in cold weather it's VERY important to ALWAYS bang on the hood of your vehicle before you start it up EVERY time! Kittens are notorious for hiding on a warm engine and can be killed or terribly injured by belts, etc. when the engine is started!!
Love your work, Doctor!
And thanks.

15
baby it's cold outside
by on 12/15/2010 07:50am

I live in Canada where it gets cold in the winter. Too cold for most cats. Yes there are cats who survive winter...they are lucky enough to find food and shelter out of the wind. But I also know many do not survive and many do not survive unscathed. My sister rescued a stray...gave it food and shelter on her porch until she coulld coax him in...he lost both ears to frostbite.
My parents indoor/outdoor cat disappeared after a snowstorm for several days...when he finally reappeared it was evident he had been trapped somewhere by snow and had had to dig his way out...he was a mess...with torn up paws and wet through.
Friends of mine had a cat that lost a paw and an ear to frostbite and my neighbours cat froze to death on their windowsill waiting to be let in. That is one of the issues...a cat with a home will not look for shelter, but hang around in the wind and cold trying to get noticed to be let in, exposing themselves to much risk.
Cats do freeze and cats do not enjoy cold. Any weather I would not want to be out in is too cold for cats. Kittens in particular are at risk, as they have no way to keep warm except mum and each other, when they are young they cannot even shiver to keep warm.
Two young cats were "dropped off' after hours at our shelter and were hypothermic by morning and became very ill. Some cats do better than others with cold and snow....some have better fat stores, some have better coats, some have more smarts at finding shelter, some have others to share warmth and space with, but in the main...winter is hard on them..not just the cold, but the wet, the difficulty of finding food, and the windchill.
Please do not make the mistake of thinking cats are okay with winter. I think the thing to keep in mind here is that any cat that goes outside, needs to go out for short times only...I hate seeing cats let out in winter while the owners are at work or in bed or otherwise occupied, so the cat ends up being outside for far too long.
Even feral cats suffer and many of them do not make it through...what is the average lifespan of a feral cat? and an indoor/outdoor cat? and an indoor only cat? There are multiple factors affecting those...one of them is winter.

16
too cold?
by on 12/16/2010 10:52pm

I'm from Naples Fl. so the "new cold" of Jacksonville Fl seems too cold for me as I found myself shivering in my high heels and dress on my lunch hour making a village of cardboard boxes and hay behind the Mickey D's where my feral cats live. Thank God I did as it got to be 21! They were fine and happy the next day when I went to feed them.

by on 12/17/2010 11:00am

You're a good Mommy and your colony is lucky to have someone as dedicated as you :)

17
Miracle cats
by on 02/08/2011 11:05am

I live in north eastern Montana, and have 14 cats. One of them was missing for 2 months in January and February of 2009 when the temperatures reached at least -25 and came back with only her ears frost bitten (sadly she lost half of one the tip of the other). Another one got trapped in the shop by snow blocking the kitty door the other night when the temperature dropped to almost -39. I went out and found him the next morning, he was just fine. I worry about them being out when it is that cold, and try to keep them in, but they do survive.

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About fully vetted

Patty Khuly, VMD, MBA

Photo of Dr Khuly

Dr. Khuly is a former petMD blogger and small animal veterinarian in Miami, Florida, where she practices medicine at Sunset Animal Clinic and serves on the board of the South Florida Veterinary Medical Association. She is a graduate of Wellesley College, the University of Pennsylvania School of Veterinary Medicine, and The Wharton School of Business.

As a significant sideline, she writes...a lot. She authors pet health columns for USA Today, The Miami Herald and Vetstreet. She also writes a popular monthly column for Veterinary Practice News and serves as regular contributor to Veterinary Economics, The Bark, and the Veterinary News Network.

Dr. Khuly lives in South Miami with her brood of hens, goats, dogs, cats...and humans.

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