Pet frames that don't exist

Game: Wow classic 20th anniversary fresh
Version: 1.15

For the past few months, I have been seeing extra pet frames in the raid, but theses pets do not exist.

I use the default raid frames; no addons.

This occurs especially in the tank columns of the raid where people marked with /MT appear.

For example, our tank’s name is Prophet. He will commonly have 2 pets named Prophet under him. Neither of these pets exist.

We don’t use engineering pets (e.g. robot chicken).

However, hunter and warlock pets function as expected on the right side of the frames.