I have an 80lb pitbull that is all muscle.
Best dog I have ever had too.
One day on a walk, he spotted his arch-nemesis Mr. Rabbit and lunged for it.
It damaged my right knee.
Doctors recommended surgery.
1 dose of Ivermectin took the pain away within 2 days.
I didn't even notice it until walking into Harbor Freight Tools that my knee didn't hurt anymore.