Blood is mostly liquid, with numerous cells and proteins suspended in it, making blood thicker than pure water. The average person has about 5 liters (more than a gallon) of blood. A liquid called plasma makes up about half of the content of blood.
Feet and Beak. Like other birds in the raptor group, owls of all species use their beaks and talons to defend themselves. An owl's feet are equipped with particularly long, sharp and curved claws, which he can dig into an adversary and use like hooks to tear and rip at flesh.wls can't always successfully defend themselves from other animals, particularly their prey. Great horned owls, for example, are often found either dead or injured as a result of would-be prey like skunks and porcupines fighting back.
The great horned owl is a large owl and the heaviest owl in North America. Their feathers are a dark brown mixed with white, black and tan. They have large feather ear tufts which are called plumicorns and are not actually related to ears or hearing at all. Their eyes are very large and yellow.he most commonly heard call of the great horned owl is a hoot that has been described as hoo hoooo hoo hoo that may be repeated several times. Click on the link under the picture for an example. You often hear a nearby owl calling to be answered by a more distant owl.