The observation that prostate cancer metastasis to bone is associated with increased osteoblast activity is supported by the finding that serum levels of markers of osteoblast proliferation, such as bone-specific alkaline phosphatase, are increased in patients with metastatic prostate cancer.
Mostly, animals get eaten by lions, not the other way around. Thatâs because lions are at the top of their food chain, and at the very center of their food web. Lions have almost no predators. However, old, sick lions are sometimes attacked, killed and eaten by hyenas. And very young lions can be killed by hyenas, leopards and other predators when they are not being watched carefully by their mothers. But a healthy adult lion has little to fear from any other animal.
Predator, Prey, Predation â A predator is an animal or organism that survives by eating. other animals or organisms, the prey. Mountain lions are predators that kill and eat deer. Whales are predators that prey on plankton. many other insects, such as dragonflies, moths, or other spiders. a predator killing its prey. Top predator â An apex predator; a predator at the top of its food chain. jaguars, whales, and bears are examples of top predators. food chain where larger predators are absent.