Horse anatomy. The horse has a sesamoid bone called the navicular bone, located within the hoof, that lies on the palmar aspect of the coffin joint between the second phalanx and third phalanx (coffin bone). The navicular bone in the horse is supported by the distal sesamoidean impar ligament and two collateral sesamoidean ligaments.
Young males are at first leave, jostling with the older jaguars until they succeed in claiming a territory. Typical life span of the jaguar in the wild is estimated at around 12 â 15 years. In captivity, the jaguar lives up to 23 years, placing it among the longest living cats.
1 American Black Bears can live up to 30 years in the wild but most do not reach 10, mostly because of encounters with humans. They also do very well in captivity with the average life span being up to 34 years.  Bears are shy creatures and they can be spooked or frightened.