There actually two bugs on those amazing predator pets.
The first one is that Hotkeys for changing the intent don't work
The second one is that by dragging a creature with ctrl-click (or click with grab intenr) don't let you drop it unless someone else drags it away from you.

Steps to reproduce:
1. Be a HellHound (easy thing if you die early on Hunter Games round).
2. Try changing intent with hotkeys. (1, 2, 3 and 4 keys when hotkeys are enabled.)
3. Try ctrl-click for dragging a creature. (Not sure if grab intent clicking shows the same bug.)