Pets

https://www.kinship.com/cat-lifestyle/cat-distribution-system

It refers specifically to the appearance of strays that need homes and you take them in, but I count the work of shelters, where I got my two, as another cog in the greater wheel that powers the CDS. In this case the CDS directed me to the shelter and the choice the cats and I made of each other.

Puzzle feeders are a good idea. They make the cat work for their food and keep them from gorging a lot at once. But sometimes a really smart cat can defeat them. I bought a feeder that was like one of those clown dolls with the weighted base that would pop up after it's knocked down, so you put kibble inside it and the cat has to figure out how to knock the toy over sideways so the food would come out a hole on one side, a little at a time. My cat figured out that he could get all the food out at once if he pushed the toy over, held it down and rolled it until all the kibble fell out the hole at once.