Behe will mewl and squirm, crying out in hunger.
The Wave-Reader will use all of its senses to try and find food, preferably away from the creatures that are trying to grab it.
Pinky explores, looking for food or a safe hiding place.
Escape into another room and look for food.
BITE KILL MAIM, RUN AWAY
-----
Behe mewls. The creature looks into the bag and throws in some more toruses. They're still as tasty as ever (+2 Fullness, +1 Mutation Point), but it is still hungry. Behe realises that some stuff is different, specifically the bag it is in seems to be on its side and is on some vibrating surface.
Wave-reader smells some food and slithers away as fast as it can. It just outpaces the creatures and follows the scent...
Pinky crawls around. It can't find any food.
Magnus bites the fingers, falls to the ground (-2 HP), and crawls away from the creatures, who run into walls. Magnus slips under a grate in the wall and ends up in a metal corridor.
H.P. snaps at the creatures, removing a finger (+1 Fullness, +2 Mutation Points) and escapes.
-----
You are very hungry.
You are moderately injured.
You are escaped.
Main Thought: Food!
You are ravenous.
You are lightly injured.
You are in a metal thing, stretching a while in each direction.
Main Thought: FOOD!
You are very hungry.
You are lightly injured.
You are chasing food.
Main Thought: Food?
You are hungry.
You are uninjured.
You are metamorphosing (3 turns left)
Main Thought: ...
You are hungry.
You are uninjured.
Main Thought: Does she want me to be quiet?
You are not hungry.
You are moderately injured.
Main Thought: Dark...
-----
A note from the GM: Brains may not give as obvious of benefits as Body or Sense, but it does have benefits. Specifically, you can give more general actions and have your creature follow them, more complex plans are possible, and I give you more helpful explanations of stuff. Also, the "Main Thought"s vary in complexity and utility proportionally to Brains.
Just food for thought.