"Predators" is the common name, but they can also be considered "heterotrophs". Heterotrophs are beings that do not make their own energy, like plants or other autotrophs, and instead eat plants or other animals.
"Consumer" is another name for a heterotroph.
Some well known popular predators would be lions, tigers, sharks, and bears. These all are large animals capable of killing smaller animals.
Birds may avoid animals with large eyes because they could be perceived as potential predators or threats. The presence of large eyes might signal alertness or aggressiveness, leading birds to view them as a potential danger. Additionally, birds may have evolved to avoid animals with large eyes as a survival strategy to reduce the risk of being attacked or eaten.
Most rainforest animals live in the trees, such as insects, snakes etc. This helps smaller animals when the rainforests flood and predators such as large fish are in the waters below. The trees also provide the animals with food.
A large population of predators indicates a healthy ecosystem that supports a large population of prey animals.
If your question was "Are cougars predator or prey?", then the answer is "predator". "Predator" is an animal that kills and eats other animals; "prey" is an animal which is often eaten. Many animals fall into both categories; mid-sized animals often eat smaller animals or insects, while larger animals eat the smaller animals. A large animal which is rarely eaten by others is sometimes called an "apex predator", because it's at the top of the food chain. Humans and bears, for example, are "apex predators".
Great Danes, being large dogs, have few natural predators due to their size. However, in certain environments, they may face threats from large wild animals such as wolves or bears, particularly if they are roaming in areas where these predators are common. Additionally, smaller aggressive animals, like coyotes, might pose a risk to a Great Dane if it is injured or vulnerable. Overall, domesticated Great Danes are more at risk from human-related dangers than from natural predators.
Sharks are apex predators. They do not have any natural predators except other sharks. Large sharks are known to kill and eat smaller ones.
All predators that have a remaining food source hunt other animals, usually smaller then themselves (there are a few exceptions). Some of these animals include cats (the family), dogs (the family), birds of prey, fish (large ones), and other common mammals.
Larger whales tend to eat smaller whales. Other animals that are known to eat small whales include orca and shark. Large whales are not predated but predators themselves.
Saint Bernards, being large and powerful dogs, have few natural predators. However, in the wild or rural settings, they could potentially face threats from large predators such as wolves or bears. In more urban environments, their main dangers come from other dogs or aggressive animals. Overall, their size and strength make them less vulnerable compared to smaller dog breeds.
Predators of lions include other large carnivores such as hyenas, leopards, and sometimes crocodiles. However, adult lions are apex predators in their ecosystems and are not regularly preyed upon by other animals.
Woodland birds are smaller because they need to hide from the lare predators. Ocean birds are bigger because there are not large land predators they need to hide from near the ocean.