Spiders have heart rates of thirty beats a minute. All of these facts tell what make spiders unique. Most spiders use webs to catch prey. Some drop webs on their prey like nets. Other spiders jump on their prey, and others trap it.
Most spiders eat insects, but some larger spiders eat frogs and birds.
Spiders use many ways to catch, eat, and digest their prey. Spiders do not chew their food, they digest differently than other animals. First spiders hold their prey with their fangs. Then they bite their prey with poison, and wait for it to die. Next the spiders inject their prey with enzymes to dissolve the prey from the inside out.