Q. My dog used to be very active. Now she's having trouble getting up the stairs and just lays down when she's outside. What's wrong with her?
A. It sounds like your dog could be experiencing joint discomfort or arthritis in her hips, especially if she's a senior dog.
If that's the case, fish oils and joint supplements might help, both of which can be obtained over the counter.
However, if your dog is young or the lethargic behavior persists after giving her the aforementioned supplements, there might be a more serious underlying condition, so you should take her to your veterinarian for a proper physical examination.