Feline Leukemia | Best Friends Animal Society - Save Them All

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Feline Leukemia Virus (FeLV): Signs, Prevention, Prognosis

Feline leukemia virus (FeLV) affects cats’ immune system. Read FAQs about the disease, including transmission, signs, diagnosis, and prognosis.

Rico, a tabby cat who is feline leukemia virus (FeLV) positive, lying on his side on a blue shelf

We will reach no-kill in this country in 2025.

Best Friends, a 501(c)(3) nonprofit organization (tax ID# 23-7147797), operates the nation’s largest sanctuary for homeless animals and provides adoption, spay/neuter, and educational programs.

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As seen on National Geographic’s DogTown and the CW's Dog Town USA. And the inspiration behind the critically acclaimed film, The Champions.

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