The bison is infected with bovine malignant catarrhal fever - it is not contagious to canines.
Mature to graphic descriptions of illness and injury.
RE: Riven, you have inadvertently angered a bull bison. He has taken offense to your close proximity and is charging.
Riven had taken Adelard's words to heart and occasionally took quick strolls down the border to refresh the markings. The methods for doing so were quite weird, and he still felt a little awkward, but he figured he was getting the hang of it. It wasn't as though he was some big brute, and he doubted he could scare anyone off, even if he tried. But still, he wanted to help, and it was nice to get out and stretch his legs, unworried about the mothers and their pups as they began wandering from their dens.
It was peaceful, now that there were no more estranged sisters barging into the territory and causing a scene. Riven basked in the quiet, appreciating the serene morning as he made his way around the border. It was supposed to be a quick stroll before noon, taking care to make it known that the borders were marked and defended, but it seemed that the day had other plans.
There was a familiar huffing sound, accompanied by heavy footfalls in the undergrowth. Back home, in the plains, there had been a large population of bison - Riv had always avoided them, for obvious reasons, but occasionally the hunters would be able to bring a young one down. He had not known them to wander so deeply into a forest, but that didn't seem to bother this one too much. A lone bull, large and stocky, but also definitively wrong in nature.
Mucus dripped from its nose and mouth, head hung low and eyes a milky blue. Riven had gotten much closer to the bull than he'd realized, and he took a quick few steps back, cringing as a branch cracked beneath his foot. Immediately, the bull's head turned toward him, eyes wide and unseeing, and with a deep bellow, it charged.
Riven scrambled to turn and run, but the bull was just a hair faster. He supposed he was lucky; the head connected pretty evenly with his side, but it didn't mean the collision didn't hurt. The healer didn't really know how far he flew, but he did connect with a tree at some point, and he felt his head bounce off the bark and the air was driven from his lungs. Adrenaline was an excellent painkiller, though, and the little wolf immediately darted beneath a bush to his left, plastering his body to the ground and watching the gigantic animal from beneath. He was fighting to remain quiet and catch his breath simultaneously, which was nigh on impossible with the pain in his side and head.
The bison swung its head around blindly, letting out distressed grunts and bellows, and later Riven might feel bad for the poor creature. It staggered, but didn't fall, and Riven pressed his ears to his aching skull. Something wet dripped down his left temple, and he didn't have to look to know that he was most likely bleeding.
All he could do was wait it out; eventually, it would lose interest and have to leave... right?