Rabid seals are extremely rare, but they can occur when a seal becomes infected with the rabies virus, usually through a bite from another infected mammal. When affected, seals may show unusual and dangerous behavior such as aggression, disorientation, excessive drooling or foaming at the mouth, and a loss of fear toward humans. Because seals are normally cautious and avoid people, these changes can be a serious warning sign. Rabies is almost always fatal once symptoms appear, and infected anima