A moment from yesterday! The Mule Deer rut is on its way! I spotted this old muley buck keeping company with four does. Check out his swollen neck — when bucks go into rut, their necks thicken from a mix of testosterone, increased blood flow, and muscle mass. I’ve read that their necks can swell up to 50% during the rut. Once the rut wraps up, the swelling gradually fades. #muledeer #deer #muleyfreak #wildlife #wildlifephotography #reelsvideoシ #fbreels2024 #fyp #fypreels #colorado #rut | Colorad

“Rut” refers to the hormonal change experienced by male deer, antelope, and sheep species during their breeding season. This increase in testosterone makes them extra aggressive, and for our deer herd at Bearizona, this aggression peaks during the month of January! 🦌 #bearizona #wildlifepark #deer #muledeer #rut | Bearizona