Hearing. Deer have large rotating ears to pinpoint the direction of even faint sounds. They also use this to spy on warning calls of other animals (birds, etc.).
Smell. They have a very acute sense of smell, they detect the presence of any anomalous scents, scents that wouldn't be in the wild, they usually associate these with humans, and deer are constantly sniffing.
Sight. A deer's eyes are its final warning system. They can see about %90 or there surroundings, however they have depth perception only when looking down there nose. However a deers eye sight, much like a Turkey or a T-rex is very keen on detecting movement Contrary to popular belief deer can see more than black and white. They can tell the difference between blue and other colors(which appear to deer as grey), and they have a debated level of sensitivity to Ultra Violet Wavelengths, allowing them to pick out human objects that fluoresce, possibly even heavy urine markings, at a distance. Deer also show a mild sensitivity to yellow.
Common Sense. People friendly deer are not good sport, because there less spooked by people scent, and noises. There also a lot less likely to jump when you raise your gun or bow. On top of that many "friendly" or city deer don't eat a natural diet, often there hand fed grains or apples, which makes them dependent, and more likely to eat garbage and other non-ideal diets.
The use ecolocation to find there food or detect other enimies
Yes, it is a concrete noun since you can use one of your five senses to detect it.
WORMSworms will usually use their small senses to detect food then use their small mouth to obtain it.
If a deer senses danger, they often run away from it. However deer, especially males will often defend their territory or harem using their horns or front legs - ever seen the funny revenge video of the deer attacking the hunter? That is a good example of the deer using its legs only to defend itself and ward off the human. Remember deer have acute hearing, they are very cautious, weary animals and live in groups for protection, these are herbivours after all, that's why they have eyes on the side of their skull - designed to be on the lookout for danger constantly. Ofcourse deer are also nimble, quick and agile animals, all these are adaptations and structures to help the animal when it must escape or face danger.
They use the parts of their brains which the sense organs send information to.
Smell and hearing first of all. Then sight.
A deer uses his tail to send signals to the others in his herd. It is often used as a warning for danger.
Jellyfish can detect vibrations, scent, and with the use of their eyes, light, dark and movement. They have an organ called a statocyst that allows them to orient their position.
if i have researched correctly, they use their great sense of hearing and eyesight.
Raccoons can use their keen sense of smell, their hearing, and sharp vision to spot or detect predators.
It senses danger with it's ears and eyes and then protects with it's teeth and claws
The flash of the White Tail is a warning to other deer that danger is present. Deer will allso "snort" "wheeze" and stomp the ground. If a deer senses something is close but can not smell it or is unsure- it will snort or stomp the ground to get a response. The tail is a perfect sign- bright white can be seen from a long way in the forest.