I was able to rename one of my pets using a reward box in my inventory. Is there any way to buy pet name change tokens with CSC or SP? If so, where can I find them?

I would much rather rename my pets than give them away and adopt new ones.

on this page, in the little drop down menu that each pet has, there is a change name option. it costs 500 csc :)

That's a really cool feature!