Baryonyx just eats grass. Harmless, kind of like a cow. Tastes great too! He is hostile! Found in the Mining Dimension.
Eats grass. Looks fierce!
How to Kill
Pretty much any way you want to.
Use a Crystal Apple from the Termite Crystal Dimension to put your pets "in the mood". Babies will automatically never despawn. No zookeeper item needed!
Found: Red Ant Mining Dimension