Shelters: take in and care for abandoned cats and dogs
Breeders: breed animals, in this case cats and dogs, for human use. For cats and dogs, they are generally bred to be pets.
If you want to know more you can look up the differences, it’s very easy to find online
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Anonymous#121h
Shelters also often get overcrowded and sometimes have to put animals down to make room for others
It’s morally and ethically better to adopt from a shelter imo. The fewer animals they have to house the better (aka more animals have a proper home)