Here's why:
* Black mambas are highly venomous and dangerous: Hyenas, while powerful, are not immune to the deadly venom of a black mamba.
* Hyenas prefer larger prey: Hyenas generally target larger animals like zebras, wildebeest, and even other predators like lions. Snakes are too small to provide a significant meal for a hyena.
* Black mambas are agile and fast: Hyenas are powerful but not particularly fast. Black mambas are known for their speed and agility, making them difficult prey for hyenas to catch.
However, there are some exceptions:
* Opportunistic scavenging: Hyenas might scavenge a dead black mamba, especially if it's already been killed by another predator.
* Rare encounters: It's possible, though extremely unlikely, for a hyena to encounter and kill a black mamba, especially if the hyena is desperate for food or if the snake is weakened or injured.
Overall, while hyenas might occasionally encounter a black mamba, they generally avoid them due to the risks involved.