Ran into a frustrating bug when trying to tame then subsequently summon a Grimalkin from the Ilmari Desert. Here's an overview of what's going on.

1.) I have AH level 73. I used a piece of string to tame a Grimalkin
2.) I get the message that I tamed the beast, and that the Grimalkin was sent to my stable, but it does not have a picture show up in my stable like every other pet.
3.) I summon the pet, but it does not show up. Nothing happens.
4.) After the failed summons, I cannot summon any of my other pets, as red text appears on the screen that says "You don't meet the pet requirements to do that". Before the failed summons, I can summon my other pets just fine.
5.) In order to reset this so that I can at least summon my other pets, I have to log out then log back in.

Things I have tried to resolve this:
1.) Have various different skills active when doing the Grimalkin taming
2.) Tried not having my pet active when performing the taming
3.) Releasing the Grimalkin the going back to the desert to tame a new one
4.) Double and triple checked that I am using the right whistle for the matching stable slot.

Nothing has worked, and it's quite frustrating that I cannot tame/summon this pet, when I have been wanting to have one for quite a while. Is their some prerequisite for summoning Grimalkin that isn't on the Wiki? Because I looked there as well and didn't find anything. I reported this as a bug in-game two or three weeks ago, but haven't heard anything so I thought I'd see if anyone else has encountered this.