Instruct: Classify a review as either positive or negative.
Query: OK only for small, immobile pets

My dog is a chihuahua/pomeranian mix - 6 lbs, full grown. She leaps over the wall of this pen as if they weren't there, actually clearing it by a few inches. I gave it to another friend with a smaller, teacup dog. She climbed out with ease. The walls need to be at least a foot and a half higher to be useful. Complete waste of my money.