6 Deer’s eyes are more sensitive to light than human’s. They sometimes freeze when their eyes are suddenly struck by the beam of car headlights. Their fully dilated pupils become blind and they can’t see at all.

Deer’s eyes are much larger in size in comparison to ours. Their larger eyes allow pupils to open much larger than humans, especially in low-light conditions. Due to the large pupil opening, the deer’s light-gathering ability is more enhanced than ours. Large pupils allow ten times (or more) light to enter into a deer’s eyes than ours.

Deer have a reflective membrane situated at the back of their eyes. This membrane causes the eye-shine of deer and they get frozen in an automobile headlight. The headlight beam strikes deer’s eyes that are fully dilated to capture complete light, so they become blind and can’t see at all. They do nothing because they do not know what to do until their eyes get adjusted. (source)

7 Llamas suffer from a psychological disorder called “berserk llama syndrome” due to too much attention from humans. As a result, they view their handlers as fellow llamas and become more violent and aggressive towards them.

A human-raised llama often suffers from a psychological disorder called “berserk llama syndrome” (BLS) which is an aberrant behavior syndrome, or “berserk male syndrome” because it is mostly found in males. They suffer from this condition because of too much attention from humans, insufficient maternal milk supply, or isolation from other llamas.

As a result, they attack their handlers from behind and become violent, dangerous, and aggressive. Adult male llamas suffering from the BLS condition can be more dangerous and their interaction can be rough.

Their behavior includes chest-ramming, biting, charging, and leg-wrestling. Whereas the behavior of female llamas behavior suffering from BLS is limited to spitting and difficult handling. (source)

8 Some experts say that some dogs have a form of self-occupation. They have similar symptoms to unsociable humans. These dogs also find it difficult to interact socially and express emotions. This form of autism in dogs is called “canine dysfunctional behavior.”

“Canine dysfunctional behavior” (CDB) is a disease that is found in dogs which is a condition where dogs become anti-social. It is similar to dementia in humans. Like humans, dogs also find it difficult to interact socially and express emotions.

CDB causes them to develop pathological changes in the dog’s brain that slow the mental functioning of dogs which results in loss of memory, motor function, and learned behaviors and abilities at an early age.

This disease mostly takes effect in older dogs of more than ten years. The reason for the occurrence is considered to be genetic or separation from mother and siblings at an early age.

Dogs diagnosed with canine cognitive dysfunction often lack socialization skills, get confused in familiar places in the home, spend a long time sitting quietly, have abnormal sleeping patterns, and do not respond to calls or commands. (source)

9 It is believed that camels store water in their humps. However, that’s not true. Their humps are ideally the reservoirs for fatty tissue. Concentrating fat in their humps actually minimizes heat insulation throughout their body which allows camels to survive in extremely hot regions.

Camels can go weeks without drinking water, so it is believed that they store water in their humps to use for later use. However, this is a popular misconception because a camel’s hump is not a reservoir for water. Their hump is the reservoir for fatty tissue.

Fatty tissues are used as a source of nourishment for camels when food is scarce. When the camel has gone a long time eating no food, then their body metabolizes the fat in their humps for nutrition. The camel’s hump also helps to control their body temperature in deserts, where the temperature is high during the day and decreases considerably at night.

Concentrating fatty tissue in camel’s humps minimizes the heat insulation throughout the body when the temperature is high during the daytime. Then, the extra heat disperses throughout the camel’s body to manage the body temperature at night. (source)

10 Every zebra’s coat has a unique pattern of stripes which works as a giant bar code and we can even scan it. Scientists use zebra’s pattern as a barcode to identify an individual in a herd which allows them to keep a track of them over time.

Every zebra has a unique pattern of white and black stripes which works as a giant bar bode. Scientists can scan zebra’s stripes like a barcode to identify an individual zebra in a herd. The scanning system called “stripes potter” was developed to scan individual zebras from a single picture.

This scanning system is so accurate that it can also be used on other striped-coat animals such as tigers and giraffes. The field ecologists just take a picture of a zebra, then the part of the picture is highlighted by scientists. The highlighted portion is loaded in the database and assigned a “stripe code.” Every animal has a unique barcode. (source)

11 The pufferfish has a poisonous substance called “tetrodotoxin” which is 1,200 times more fatal than cyanide. This substance can kill multiple predators and even up to 30 human beings. The study says that at present, there is no antidote available for this toxic substance.

Pufferfish have a poisonous substance called “tetrodotoxin” (TTX) which is an amino perhydro quinazoline compound. This toxic substance is 1,200 times more fatal than cyanide and has the ability to kill numerous predators and up to 30 human beings.

Symptoms of pufferfish poison start from a blunted sense in the lips and tongue, occasional vomiting, then in the massive and sudden dropping of blood pressure, in fourth-degree apnea, and other critical conditions.

Death due to TTX poison can occur in an hour and a half up to eight hours after exposure. At present, there is no antidote available for this toxic substance. (source)