Final answer:
Feline infectious peritonitis (FIP) itself is not contagious, but the Coronavirus that causes it is highly contagious among cats.
Explanation:Feline infectious peritonitis (FIP) itself is not contagious, but the Coronavirus that causes it is highly contagious among cats. FIP is caused by a mutation of the feline coronavirus, and it can be transmitted from cat to cat through direct contact with respiratory secretions or feces of infected cats.