Character: marilyn beauchamp
Female anthro horse athlete with light-brown/golden fur owned by newenglander.
Some links from around the web:
https://www.furaffinity.net/view/43802503/
https://www.deviantart.com/ulario/art/Marilyn-Pgs-1-4-145710013
https://www.deviantart.com/ulario/art/Marilyn-Comic-Pgs-5-7-150312429