Missing pet on my hunter

myself and another fellow guildmate have hunters, and we both discovered that one of our pets is still showing its icon but cant be called and we get errors saying you dont have a (or) a pet.

so what happened to our pets? myself i only had 2 a spider and scorpion, my spider is there, but scorpion is gone Awall! hopefully theyll come back soon, i expect it just a patch error thing and will be fixed.