I work at Petco. Yes this is a corporate decision and will take effect tomorrow (TUE). Half of reptiles will be gone, all birds except parakeets and cockatiels, 2 towers (most petcos have 4 towers) of small animals, and salt water fish. They will still be carrying all small animals (guinea pigs, mice, ferrets, hamsters, dwarf hamsters, rats, gerbils) except they will only be one sex (minus ferrets who are neudered anyway).
The reason for getting rid of salt water is due to shrink. A lot of salt water fish get brought to us already sick, don't fare well in the tanks due to rough transport, and die. The decreasing of small animals and only having one sex is because we get a lot of small animals in that our suppliers mix their sexes up and they are pregnant, we have to put them in the back, then they have babies, and it's just happening too often. The decrease in general is because we just don't sell that many small animals. My store for example, will have guinea pigs for a very long time. People only seem to buy babies, and when they get full grown, they don't want to buy them, and they are stuck at our store for a long time. So now we will only have two towers, one sex, and if nobody buys them they will be there until they are sold. Same thing with reptiles.
I'm sure another reason they are cutting them down is due to the vet costs. Petco hasn't been having as much profit and doesn't want to spend that much money on vet bills anymore. This isn't saying we won't take any animals to the vet anymore, we will and are. It's just common sense, the less animals, the less vet bills.
The only birds that Petco really sells regulary are Parakeets, and more than others, cockatiels. We will have Conures, etc in our store for months upon months (sometimes over a year). So that is why they are cutting birds.
I for one am glad, just getting closer and closer to selling no animals. I know they are doing this just for profits, but the people who work for petco have seen this for the past years and they are finally doing something about it.