They think a ‘free’ animal is a better deal than one at a shelter
Most shelters charge an adoption fee when you want to take an animal home. So some people think that getting a “free” animal, such as a kitten from a friend’s litter, is a better deal than adopting an animal at the shelter. But that’s usually not the case.
Dogs and cats at the animal shelter get a health exam, vaccinations, preventative medications, and often a spay or neuter surgery. If you adopt a “free” pet, you’ll be responsible for the cost of all of those procedures, which quickly adds up to far more than the typical adoption fee.