Petco

Yes they do. You must have proof of a current rabies and vaccinations up to date if you're not already on file.

They only do conures and budgies and only have done them for years. Although you are interested in lovebirds, the conures can be a few hundred while the budgies are ≈ $20. The budgies also tend to be about 4 months old when sold in pet stores.

You can donate fish or return fish. I knew a family member who had alot of babies from some mollies they had from here and gave the store the babies

Gotta go behind Petco and talk to the shady guy next to the dumpster

Once in a while

They cycle the types and colors of cats/dogs they have. Just keep checking, but I'd say it shouldn't matter what they look like, as long as they are personality-matched to what you like :)

Yes they do

I personally have never seen any pufferfish in the store, but there are still many options to choose from :)

They do sell mice, but not as food. If you are looking for live food for a snake or predatory animal you still could buy them, but you may get a weird look from the majority of people.