It is smart. You have guards and if someone gets past those... they become one of them. [If the stalker getting past isn't clever enough, anyway.]

About half your size or so, but do not underestimate them. Even small mutants can be formidable, and the pseudogiants are much worse than many others.

Normal food. I take him hunting in the Junk sometimes for animals that survive the fall from the Lambda. [Unfortunately Fang heard that F-word and his tail starts thumping on the ground. FOOD YOU SAY]