1. Lions: In some cases, lions have been known to hunt and kill tigers. This typically occurs when lions and tigers share the same territory and compete for prey.
2. Brown Bears: Brown bears, particularly large male bears, have been documented killing and eating tigers in certain regions of Asia. These encounters often happen during conflicts over food or territory.
3. Dholes: Dholes, also known as Asiatic wild dogs, are social predators known for their hunting prowess. In some cases, large packs of dholes have overwhelmed and killed tigers.
4. Saltwater Crocodiles: Saltwater crocodiles are apex predators found in coastal areas of South and Southeast Asia. They are powerful predators and have been known to attack and consume tigers, especially when tigers come near their water sources.
It's important to note that these instances are not common, and tigers are typically the apex predators in their ecosystems. However, under specific circumstances, such as when tigers are old, sick, or in areas with limited prey, they might become vulnerable to predation by other large predators.