I hate to see this

[greybeard]

Jump high or not at all....
Top 2 wires wasn't twisted like I've seen some do in the past, so looks like it just couldn't get it's hind qtr over the top wire.

 

[True Grit Farms]

Happens quite often here in my barbed wire section. So far haven't found a single one hung in my HT. I had one trying to get into my catch pen through some field fence and it broke it's neck.