Is the distemper virus that is causing wild raccoons to have zombie-like behavior, and can be fatal to pets, an extraterrestrial organism deliberately introduced into our environment to cause trouble?

This is quite true. It is designed to be a destroyer of animals and to do so in a particularly alarming and dangerous way. It is akin to rabies in altering animal behavior, increasing the likelihood of contact with humans and companion animals by becoming fearless and aggressive, and therefore, a more likely vector for transmission of a deadly virus than would be the case with the natural instinct to be roaming about as nocturnal creatures, and to avoid contact with other animals and people. This is yet another example of mischief done by the Extraterrestrial Alliance.