Although their eyesight is poor, they have good hearing and a well-developed sense of smell. Hedgehogs are good runners, proficient climbers and can even swim.
The hedgehog hears tones from 250 c/s to 45 kc/s, has a best frequency near 8 kc/s, and frequency discrimination of about 2.5% at 42 kc/s. If the audiogram is extrapolated to +80 db, it can be concluded that pure tone sensitivity ranges from a low of 200 c/s to a high near 60 kc/s.
Bats are known for their exceptional hearing, although the idea that they have poor eyesight has been widely debunked by scientists. Some species of bat use echolocation, meaning they squeak while in flight, and use the echo to and navigate.
“Hedgehogs certainly aren't blind; their little black eyes can spot your approach in the dark from a fair distance away. Hedgehogs also learn to recognise major landmarks like trees and houses.
The intelligence of a hedgehog is to that of a hamster, they may learn certain behaviors through positive reinforcement or conditioning but only at a very basic level. Hedgehogs are known to be very communicative when it comes to their needs, and often make a low purring sound when they are happy or content.
Hedgehogs are naturally quite active, and they can get quite sad and depressed if they don't get enough exercise.
Naked mole rats are nearly deaf because their ears can't amplify sound. Naked mole rats have poor hearing because, unlike other mammals, they have abnormal outer hair cells that can't amplify sound. The animals could be used to model human deafness and help develop treatments.
If you encounter an aggressive lion, stare him down. But not a leopard; avoid his gaze at all costs.
Congenital deafness (usually hereditary) has been reported in more than 100 dog breeds and is especially prevalent in the piebald-carrying breeds of Dalmatian, Dogo Argentino, Catahoula Leopard Dog, Bull Terrier, Australian Cattle Dog, English Setter, English Cocker Spaniel, Boston Terrier, and Parson Russell Terrier, ...
Tea Tree oil/ Eucalyptus/Thieves - this includes: tea tree shampoo, tea tree oil, tea tree sprays and anything tea tree. Even Candles inhaled can harm your hedgehog!
Some hedgehogs do not display outward signs of affection, while others can be quite affectionate toward their owners. Hedgehogs do not typically come when called nor actively seek out human interaction.
Hedgehogs can be handled (they are not too prickly), although some patience is required to make sure your hedgehog is both safe and comfortable in your hands.
Petting a happy hedgehog is a bit like affectionately stroking a bristly hairbrush.
Hissing like a Snake
Keep your distance from a hissing hedgehog, just like you would from a hissing snake. When a hedgehog hisses, it means he is really annoyed and wants you, other hogs or other animals to clear off.
The Nile crocodile is the most aggressive animal in the world mostly because it considers humans a “regular part of its diet” according to a-z-animals.com. The animal can weigh up to 1,650 pounds and can be found in 26 countries in sub-Saharan Africa.
Mantis shrimps probably have the most sophisticated vision in the animal kingdom. Their compound eyes move independently and they have 12 to 16 visual pigments compared to our three. They are the only animals known to be able to see circular polarised light.
Just as humans stare into the eyes of someone they adore, dogs will stare at their owners to express affection. In fact, mutual staring between humans and dogs releases oxytocin, known as the love hormone. This chemical plays an important role in bonding and boosts feelings of love and trust.
There are also numerous animals with no hearts at all, including starfish, sea cucumbers and coral. Jellyfish can grow quite large, but they also don't have hearts.
Hereditary deafness in many species and breeds is associated with loci for white pigmentation, where the cochlear pathology is cochleo-saccular. In other cases, there is no pigmentation association and the cochlear pathology is neuroepithelial.
#8: Snakes are deaf
Although they lack eardrums, snakes possess inner ears which are able to pick up not only ground-borne vibrations but low frequency airborne sounds. They do have difficulty with sounds at a higher pitch.
Some hedgehogs will bond to their owners for life (HHC). Bonding does require effort, persistence, and an understanding of hedgehogs. Many hedgehogs don't like to be petted by just anyone until they are completely comfortable with their environment. This is especially important when a hedgehog goes to a new home.
Hedgehogs tend to bond with their owners. They will remember your voice, your smell, and even your appearance. Some will only relax with their owners and be loyal to their owners. Make sure a hedgehog is the pet for you, be prepared for a commitment.
Every hedgehog has a unique personality, but most aren't interested in human affection. Caretakers note that it takes a lot of time and effort to get a hedgehog to tolerate being held. Like porcupines, hedgehogs have sharp, prickly quills that they use to fend off predators.