Photo 1: a photo of a canine with osteopetrosis, or ‘bone-on-bone.’ Likely caused by a lung infection, the exact mechanism and underlying causes to this unstoppable bone growth are still unknown, however, osteopetrosis can occur in humans as well as dogs. Osteopetrosis is a bone disease in which bones become unusually and alarmingly dense and easily fractured. This condition can be caused by many factors, and is, unfortunately, heritable. This was one of many disease our tour guide mentioned that used to be treated in animals in the exact same manner as it would be treated medically in a human. As previously stated, the current underlying mechanisms to osteopetrosis in canines are currently unknown, but osteopetrosis in humans can be prevented. It’s invaluable that we diverge in our treatment of neurological and other disease between humans and non-human animals, as the mechanisms, anatomy, and responses are inherently different in nature.