Millions of animals are euthanized every year because shelters can't find homes for them. Buying animals from pet stores also tends to support puppy and cat mills, many of which have deplorable conditions for animals, which shouldn't be tolerated.

Learning about factory farms and their horrendous treatment of animals is what made me become vegetarian in the first place. I also support the education of the public on adopting pets from animal shelters or saving homeless animals off the street in lieu of buying them from pet shops.