I have a female ferret thats around a year and a half. Im planning on getting another one but first I was wondering if I could bring her in to see how she does with other ferrets, can I do that?

You have a leash then yes

Yes

Call them and ask!

Petco allows pets in the store if they're leashed, crated, or secure in someone's hands. You would need to call the store ahead of time to ask if your ferret can physically meet theirs in the store. Most managers will allow it if your animal is up to date on shots and if you ask nicely enough!

You would have to call your local store directly. They do allow pets on leashes.