Download Animal defenses by Christina Wilsdon PDF

By Christina Wilsdon

Bugs that appear like leaves, snakes that play lifeless, fish that fly, and toads with toxic epidermis - those animals are one of many creatures that shield themselves in interesting methods. virtually each animal is hunted as nutrition by means of another form of animal and has built how one can safeguard itself opposed to predators. "Animal Defenses" offers the wide range of actual and behavioral variations utilized by animals of their fight to outlive and indicates how scientists proceed to make new discoveries in regards to the age-old maneuvering among predator and prey.

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Like other blister beetles, it oozes irritating oil when seized by a predator. The oil causes blisters to form on the predator’s skin. Another noxious animal, the koppie foam grasshopper of South Africa, is black with red stripes. If it is attacked, a smelly, Bad smells, Bad tastes, and powerful poisons 59 poisonous foam bubbles from its body. The foam not only makes the grasshopper taste bad, but it also is strong enough to kill a dog. Likewise, the lubber grasshopper of the southeastern United States is clad in warning colors of black and yellow.

Geckos, anoles, and iguanas all can shed their tails. This is also true of some legless lizards, which are called “glass snakes” because of the way their tails shatter when they break. The predator doesn’t break these lizards’ tails: The lizards do it themselves. The movement of muscles in the tail causes one of the tailbones to snap in half. Some rodents can also shed part of their tails. Spiny rats, which live in parts of South and Central America, have tails that break off. Gerbils and some species of rats and mice lose the outer layer of skin and fur on their tails.

Crows likewise drop snails onto hard surfaces. Song thrushes hold snails in their beaks and bash them against favorite stones, which are known as thrush anvils. A bird called the snail kite is named for its habit of eating almost nothing but apple snails. Its slim, hooked bill fits neatly into the spiral of an apple snail’s shell. The bill’s sharp tip snips a muscle in the snail, releasing the snail from its shell. The oystercatcher, a bird that feeds on ocean shores, patrols shellfish beds to look for mussels or oysters with slightly opened shells.

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