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Bot Fly Infestation in Ferrets

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Cuterebriasis in Ferrets

 

Cuterebriasis is a parasitic infection caused by the bot fly species Cuterebra. Also called myiasis, this type of infection affects mammals including ferrets. The female Cuterebra lays her eggs either in the grass (to be brushed by the fur of any outdoor animals walking by) or directly on the ferret. The warmth of the mammal’s body causes the eggs to hatch; the tiny maggots then burrow downward, headfirst, into the mammal’s skin, creating a hole.

 

Over time, the maggot will grow, causing a lump that can become as large as an egg to form in your ferret’s skin. In addition, the maturing maggot has mouthparts, which allows it chew and eat farther into your pet’s flesh as it grows. However, do not crush the lump in an attempt to kill the maggot, it will cause an allergic, sometimes fatal, reaction in your pet. It is best to take your pet to a veterinarian to surgically remove the maggot.

 

Symptoms and Types

 

Two black spots will be visible from the hole(s) created by the burrowing maggot, which are typically found on the neck, near the shoulder blades, or in the nose or mouth. These are spiracles at the tail end of the maggot through which it breathes and excretes waste products (a urine-like substance). The stress caused by this type of infection can lead to lethargy, fever, and loss of appetite (anorexia) in your ferret. And if the maggots accidentally migrate to the brain, it may cause:

 

  • Seizures
  • Depression
  • Blindness
  • Incoordination or unusual circling

 

Causes

 

Cuterebra bot fly maggot(s) that have infested your ferret.

 

Diagnosis

 

You will need to give your veterinarian a thorough history of the ferret’s health, including the onset and nature of the symptoms and possible incidents that might have precipitated this condition. He or she will then perform a complete physical examination as well as a biochemistry profile, urinalysis, complete blood count, and an electrolyte panel, especially if the ferret has a fever or exhibits inappetence. If your ferret has cuterebriasis, the veterinarian should be able to see the hole in which the maggot lives in during the physical exam.

 

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