How do I get more pets on Sims 2 Pets?

I've been adopting over the phone, and now the agency doesn't have any more pets. I want a puppy/kitten and the stores only have adult pets. How do I get more? Should the agency be replenishing itself? This is the PC game.|||Other than having other people breed and give up their pets, no. You should try looking up websites that have mods and seeing if they have any mods that will allow pet store puppies or replenish the agency.