Effie's Papa Bear, aka Hoppy

Effie's Papa Bear, better known as Hoppy, is a 2007 solid bay stallion on Assateague. He's sired by the bay tobiano half Arabian Sockett to Me and his bay dam Mermaid was an Assateague born full Mustang. So he's half Mustang and 1/4 Arabian, something I find pretty cool! Arabian and Mustang are the two breeds that have been most often crossed into the Chincoteague Pony. I was at Pony Penning the year he was born and he was one of a group of colts that were the first boys kept for the herd in 11 years.
https://www.thecolorfulchincoteague.com/arabian.html
https://www.thecolorfulchincoteague.com/mustang.html

As a bay Hoppy has black and agouti. Agouti tells his black to stay on his legs and mane/tail. It appears that he's homozygous for agouti. I think this because he's sired many foals but no black foals. With as many foals as he's sired he should have by now if he didn't have two copies of agouti. A black pony can't have agouti. Both of his parents passed a copy of agouti on to him, and now he passes a copy on to all of his foals.
https://www.thecolorfulchincoteague.com/bay.html

Hoppy has sired several chestnut foals so that means he has a copy of recessive chestnut. Both of his parents carried recessive chestnut so it could have come from either of them. His sire's sire was a chestnut and his dam produced a couple of chestnut foals so that's how we know they had it.
https://www.thecolorfulchincoteague.com/chestnut.html

His sire was a tobiano pinto but Hoppy didn't inherit it. Tobiano is one where you either have it or you don't. Any tobiano foals Hoppy has sired the tobiano has come from the foal's dam.
https://www.thecolorfulchincoteague.com/tobiano.html