I keep seeing all these people with their pets and they said they have overlay on them, how do you get that?

You can't actually change the BG; those BGs are parts of past events like the last morostide, splashing and so on.

In order to get a profile you can either change your pets picture yourself or comission someone.

do you mean in my pets Description? lol and I honestly have no idea how i change the background lol i didn't evan notice it was like that.. thanks :)

- alright thanks so much