The one of the 7 deadly sins that is also an animal is "sloth". Sloth is a slow-moving mammal found mainly in Central and South America. The term "sloth" is derived from the Latin word 'acedia', which means "without care". In the context of the 7 deadly sins, sloth refers to spiritual apathy, laziness, and neglect of one's duties and responsibilities. The association with the animal sloth comes from its slow-moving and lethargic nature, reflecting the idea of indolence and inactivity that the sin represents.