Oh yes def 100% wild, he was VERY unhappy to see me when I opened the feed bin lid. Unfortunatly Australia has a bi of a serious problem with mice.... we just don't have enough carnivores t o take care of them. Wild cats and foxes prefer catching native animals as they don't have the instincts to escape them.
Eheheheheeee, that's cute that your horsey has a mouse. I love how you get these random friendships forminig up in the animal world.