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The reason that animals have territorial behavior can vary. For some species its finding and protecting a food source, a nesting spot, or even attracting a mate.

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Birds typically claim their territory by singing. The northern mocking bird will claim their territory by singing a more complex song; this helps them defend a larger area and is also attractive to females.

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Examples of territorial behavior in animals

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Examples of territorial behavior in animals

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Baboons exhibit dominance when two males stare at each
other they will draw their lips back in order to show their teeth. Animals such as wolves use whats called scent-marking, when other wolves outside of the pack smell the urine or other scents; they know that area is already taken. One other example of territorial behavior is a peacock showing off its beautifully colored feathers, he struts around showing off the feathers. The prettier the peacock, the more peahens it attracts.

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Most people think of bears when they hear the word hibernation but they are actually not "true hibernators." An example of a true hibernator is a woodchuck; during hibernation its body temperature drops up to 60 degrees below normal and its heart rate goes from 80 bpm to only 4 or 5. This intense change happens in order to conserve energy.

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A niche is the way a plant or animal fits with its ecosystem. It is the role the organism plays in the environment. One example of an animal surviving because of their niche is a woodpecker eating insects; it controls insect populations in a community. Another example are Pandas; they are generally on a strict bamboo diet and their lifestyle doesn't cause them to travel around much. Adults have no natural predators so the population of pandas is only really threatened by human activity.

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A pheromone is a chemical produced by an animal to communicate in some way with others of their kind.

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Courtship in animals usually results in mating and eventually reproduction.

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Estivation is when animals slow their activity for the hot summer months. Hibernation is during the winter. During estivation many animals go underground where its cooler.

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An instinct is a way of thinking, or behaving that comes naturally. It is how animals respond to certain stimuli.
Ex. A lion hunting its prey

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A learned behavior is something that did not just come naturally to the animal but had to be taught, or from the animal copying something else it sees.
Ex. this dolphin was not born just knowing how to jump through a hoop, it had to be taught how to do it and to do it at the right time.

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Imprinting is a form of learning in which an animal basically learns who it is and how its species acts. This is usually learned in the early years of an animals life.
Ex. The geese learn how to behave and what is normal for there species by following their mothers lead.

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Classical conditioning is a way of using repetition to produce a new learned behavior.
Ex. My dog knows when i'm taking the trash out because he hears the sound of me rolling it to the street and he will sit and wait for me in the yard until i get back.

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Trial and error learning is when an animal is learning to link their behaviors with the reward or consequences produced.
Ex. My dog knows that when he comes in the house he is either supposed to go to the blue chair or to his crate.

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Habituation is when an animals response to a stimuli decreases because of how many times its been repeated.
Ex. I used to always be able to get my dog on the zipline outside when we had company over and didnt want him jumping, but now hes caught on to the fact that he's getting put on the zipline and he wont willingly come over there.

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Most animals that migrate do so to find a better supply of food, or better living conditions for the season their in.
Ex. About 75% of birds in North America migrate. Most birds fly south for the winter.

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Excretion is when an animals body gets rid of waste or lets out something. Such as sweat, urine, or poop. This is vital for survival because it rids the body of any unwanted waste.

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Camouflage is used by animals for survival by disguising them in a situation where they need to remain unseen. Camouflage can help them blend into things like out in the wilderness. Also camouflage can be used to help regulate body temperatures such as the chameleon.
Ex. Chameleons are able to change their color to blend them into just about anything. But the main reason for using it is to regulate their body temperature.

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Unique movement comes in handy for animals when they are caught in a situation they need to get out of; this can give them an advantage.
Ex. a flying squirrel is able to glide and get out of a situation easily

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the amount of living organisms that a region can hold while staying in a healthy condition.

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Food and water supply, the amount of good nutritious soil, forestation.

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A disease in which there is a severe loss of the body's cellular immunity

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a highly contagious viral infection of the respiratory passages

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an infectious bacterial disease characterized by the growth of tubercles in the tissues, especially the lungs

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Dutch elm disease is caused by a member of the sac fungi affecting elm trees and is spread by elm bark beetles.

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Pfiesteria is a disease that harms algae blooms and kills fish.

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Mutualism is when both organisms benefit
Ex. oxpeckers and zebras; the oxpeckers get food and the zebras get pest control

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Parasitism is when one organism benefits and one is harmed
Ex. fleas or ticks on dogs

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Predation is when the prey is almost immediately killed, its different from parasitism because in parasitism the harmed one is not usually killed.
ex. owls hunting mice

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in competition, individuals look to get the same environmental resource
Ex. monkeys competing to get the good fruit off of the tree.

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1. food
2. an area to live
3. a mate

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when one species benefits and the other is neither harmed nor benefited.
ex. remoras and sharks; remora get the sharks leftover meal

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A species on which other species in that ecosystem largely depend on

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Sharks; they feed on the fish population, keeping at a steady number

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Sea otter; they feed on sea urchins, sea urchins feed on kelp (seaweed) which is the main source of food for the other living organisms

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Starfish;it feeds on mussels, it maintains the ecosystem in the deep waters.