I think I bought all of the available MC pet slots, but wasn't 100% sure. I went to check and noticed that the tab for the pet slots was gone. Does this happen when the slots are fully purchased (no more available)?

Side note puppy dog eyes is there any chance we can get even one more "round" of MC slots? begs respectfully

Edit: Just remembered the dashboard lol. Yes, I bought them all.

Yes, this is what happens when no more slots are available to purchase.