Hrmmmm.... The height of the fence isn't good for a jumper ... The thickness of the posts isn't strong enough for heavy animals or ones that like to rub up against the fence ... There's no e-fence ... But you seem to be fencing off a rather large area. Goats might jump out. Sheep would be a good possibility. But I'm going to guess a little more exotic...
My guesses are:
Source
or
Pretty soon, we'll have to start calling you Ol' McDonald
LOL! Thanks for the chuckle!