Good on you for giving the lil guy a second chance!
About his head it does look swollen like big head or "bran desiese " due to being so under weight. Maybe look into it :), best treatment is cal plus and sea weed mix .
Is his face swollen or is it just the winter woolies made to look worse by the halter?
He's just ready for winter, and the halter hasn't helped. Lol
I noticed that too after I bought him, and got a chance to really checked him out.
I think after he gets some more weight his head will be more proportioned to the rest of his body.
Okay, I seriously laughed and had tears in my eyes when I read of little Mojo's story! What a brave little pony, and what a sweet little boy. I'm happy that Mojo has found a better home. Props to you guys!