Bug with pet sitter?

Okay I regularly use the pet sitter pro as one does. Yesterday I bought a Kitsune off of explorer and had someone offer me one in trade! Very happy day for me.

I go to see them "grown up" (they're both beautiful I'm so happy) but then I see along those two I also already had a Kitsune! Forgot I bought him weeks ago. For some reason I can't find the old one in the pet sitter. It is the only pet not showing up. I also checked and it's not grown yet. Should I submit this report? I can equip all three and have them follow me but just one doesn't show for the pet sitter pro.

Ty in advance