Octopuses are carnivores that feed on crabs, clams, squid and fish by catching their prey and then returning to their dens to consume it. A variety of methods are used to extract the edible portion of their prey from a shell, such as pulling it apart with their appendages, using the beaks at the center of their arms to crush it or drilling into the shell and injecting a paralyzing venom into a still-living meal. After an octopus consumes its prey, it will leave the skeletal remains, called "middens," outside its den.Continue Reading
An octopus uses a variety of methods to acquire food, such as chasing and stalking, or in an ambush strategy, emerging suddenly out of a camouflaged location and attacking its prey. Their hunting methods are based on a keen visual sense that also enables them to use their four pairs of arms in well-coordinated movements.
Octopuses are believed to be the most intelligent form of invertebrate life, but the exact extent of their observational learning capabilities is a much-debated topic among biologists. Experiments involving mazes and problem-solving have shown that they possess both long-term and short-term memories. Some laboratory tests have demonstrated that octopuses can be easily trained to differentiate between a variety of patterns and shapes. People who have kept an octopus as a pet have sometimes been surprised to discover that its problem-solving abilities enabled it to escape from its tank and climb into another one to seek food.Learn more about Zoology
Shore crabs feed primarily on invertebrates such as molluscs, clams, crustaceans and worms, but they eat practically anything they can get a hold of, including the remains of dead organisms. Their voracious appetites have lead to the regional decline of several species. Shore crabs are an invasive species due to their easily accomodated diets and widespread dispersion.Full Answer >
Stingrays are carnivores that feed on prey such as mollusks, carrion, crustaceans and fish. They are typically found cruising the ocean floor in search of prey. Their mouths, located on the undersides of their bodies, allow them to scoop food off the bottom of the ocean or dig it out of the sand.Full Answer >
Screech-owls are carnivores and feed on multiple types of prey, including moths, katydids, crayfish and small mammals like bats, small birds and mice. Its wide prey base makes it this owl with the most varied food source in North America.Full Answer >
Animals protect their young by herding, using camouflage, building dens and physically fighting off potential predators. Many animals utilize multiple strategies to protect their young, while others rely solely on a primary defense tactic.Full Answer >