Due to the toxicity of their bites, mambas are widely regarded to be some of the most fear snakes in the world. Due to the toxicity of their bites, mambas rarely hold onto their prey in attempts to constrict it. Instead, after a single bite, they usually wait for the unlucky animal to succumb to paralysis and death. They do not have many predators. Snake eagles are known to prey upon mambas. The cape file snake, a smaller species of nonvenomous snakes that are immune to most snake poisons, are also known to prey upon mambas, though their smaller size makes it difficult. While not immune to poison entirely, the yellow mongoose has a high tolerance and is usually agile enough to avoid most bites, though such confrontations are rare.