Many animals have developed physical Defence mechanisms (British spelling; Defense mechanisms in American English) which act, as evolutionary characteristics in a similar way to psychological defences. Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria Placozoa Bilateria  Acoelomorpha  Orthonectida  Rhombozoa  Myxozoa  Superphylum Deuterostomia     Chordata (vertebrates, etc. ... American English or U.S. English is the diverse form of the English language used mostly in the United States of America. ... Charles Darwin, the father of modern evolutionary theory In the life sciences, evolution is a change in the traits of living organisms over generations, including the emergence of new species. ... Defence mechanisms (British spelling; Defense mechanisms in American English) are a set of unconscious way to protect ones personality from unpleasant thoughts and realities which may otherwise cause anxiety. ...

Grazing animals often feed in herds. When a predator attacks, the animals scatter in different directions which confuses the predator and allows the animals to escape. Some animals never venture too far from their home in underground dens or thick vegetation and can quickly hide when danger approaches. Many animals have keen senses of sight, smell, and hearing so that they can detect danger and escape. Some animals have horns or antlers to fight off predators. Some animals are active only at night when it is harder for predators to find them. Grazing is the regular consumption of part of one organism without killing it by another organism. ... Categories: Animal stubs | Animal behaviour | Social psychology ... This snapping turtle is trying to make a meal of a Canada goose, but the goose is too wary. ... Scatter is a substance used in the building of dioramas and model railways to simulate the effect of grass, poppies, fireweed, track ballast and other scenery. ...

Many animals rely on camouflage or the ability to blend in with their surroundings to hide from predators. A few animals are even poisonous or unpleasant-tasting, and predators soon learn to leave such animals alone. These poisonous kinds of animals are often brightly colored, as well, which acts as a warning to predators. Anolis caroliensis showing blending camouflage and counter-shading. ... The skull and crossbones symbol traditionally used to label a poisonous substance. ...

Some animals use chemicals which they spray from various parts of their bodies to deter predators. A few animals rely on trickery and copy the defences of other animals to protect themselves.