Forum:Animals glitching

I keep trying to build a confinement area for my dinos (tried iron bars, and stone blocks), but my dinos (in particular the larder ones - Triceratops) keep glitching into the walls and getting stuck in there. I try to command them, but the only one available is the Stay command.

Am I using the wrong materials? Or are these guys just not meant to be confined? Or is this just an old glitch?

Thanks