So, I have been wondering this since I started... When you buy the pet slot for 2000 CSC (20 bucks) do you only get a single pet slot? Also, is this the only way to get more pet slots? Thank you to anyone that can give me some pointers :)

You only get one pet slot, correct.

But you can also buy them at the Millionaire Center with SP (Though each is more expensive than the last), get one out of a Loyalty Box (You get one every year starting on your second year), and if there's a Quest-a-thon you'll get one as a prize if you participate

I hope that information helps you!

Thank you for your reply! (My computer timed me out so I had not realized this posted and then I accidentally posted again, poo skittles).