One of the most rewarding moments of having large furry family members is finding them waiting by your window for breakfast. But one morning, Stryker greeted us with a lump on the left side of his face, and we were in total panic. It was the size of a golf ball! Was there a snake in the barn? A fight among friends? No - what we had was one massive sinus infection! Yes, horses get sinus infections, and they feel even cruddier than we do. Imagine having to bend down to the ground and eat grass all day with a pounding headache!