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 (Bubo virginianus), also known as the tiger owl (originally derived from early naturalists' description as the winged tiger or tiger of the air) or the hoot owl, is a large owl native to the Americas.ven tropical great horned owls have feathered legs and feet. The feathers on the feet of the great horned owl are the second longest known in any owl, although at 1.3 cm (0.51 in) are considerably shorter than those of the snowy owl, which has feathers up to 3.33 cm (1.31 in) long on its feet.