Essay On Animal Senses

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Introduction
Senses are used to help animals understand their environment. There are several sensory organs that contain receptor cells which respond to certain stimuli. The stimuli for the receptor cells come in the form of energy. The different cells respond to specific energy forms whilst being able to ignore others (OCR, 2002).
Mammals are very similar to each other in terms of the senses they use to understand the environment, although different species use the senses in different ways. For many animals, sight is the main sense to be used. In the domestic dog, (Canis lupis familiaris) the eyes are placed at the front of the head as naturally this would allow them to locate prey in front of them. In some breeds of dog, for example hounds …show more content…

The seesaw is an obstacle that requires the dog to run up the slope, and pause in the middle to allow the ramp to tip before the dog can run down. For this, the dog must be able to find the right point to pause and still balance on the narrow ramp without it tipping backwards. When running through the tunnel on the course, the dog may not be able to see the other side, and would not be able to see any hand signals given by the handler. At this point, the dog relies strongly on its other senses to get through the tunnel. Jumps may also be included in the course, which require the dog to judge when to set off to be able to clear the jump without knocking down the pole. This will rely on the dog being able to see the jump from a distance, and focus its field of vision onto the area around the jump (Kennel Club, …show more content…

A dog’s sense of smell is far more acute than a humans’, partly due to the difference in the way they function. A dog’s nose contains more olfactory receptors than a human’s that give it a more developed sense of smell (Tyson, 2012).
A dog would be able to smell where another dog has been and so could use this to follow the same course during the agility competition. Dogs are able to recognise different human scents, and so would be likely to recognise the scent of their handler over the scent of other people (Schoon, 1996).
Studies have also shown that not only is a dog able to identify a person by smell, they are able to recognise the scents from different areas of a person when mixed with other samples, for example, a dog could recognise a scent from the hand, or the elbow of the same person when given a selection from different people (Schoon et al. 1994). It has even been found that in some cases, dogs have been able to distinguish between human twins, even when the scent is almost identical (Kalmus, 1995). This shows the range of scents the dog could detect when completing the course, that they must ignore to focus on overcoming the

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