>>5047047
They do this to cats, pigeons, and goats too.
Animal breeders are a very weird and often delusional class of people. It’s not the species, its that their job is caging a bunch of animals in not enough space and forcibly pairing or artificially inseminating them (manmade horror beyond comprehension - our ancestors would be deeply disturbed). Some small breeders are sane and are basically pet owners whose pets occasionally have kids. But the ones who can actually live off it are almost always crazy.