The body is elongated without limbs. Body length from 10 cm to 12 m.
From legless lizards snakes differ a movable coupling of left and right parts of the jaws (which gives the ability to swallow prey whole), no moving of the eyelids and the tympanic membrane, lack of the shoulder girdle.
The teeth are sharp and thin, adnate to the edges of the jaw bones or connected to the jaw using special cords. Poisonous snakes have large, sharp, curved back teeth. These teeth have a groove on the front surface or internal channel through which the poison in the sting gets into the wound. Do Viper snakes because of their mobility shortened maxillary bones poison fangs can rotate 90°. Poisonous teeth in some cases (Gabon Viper) reach a length of up to 4,5 cm.
Snakes are distinguished by a large number of vertebrae (200 to 450).
The eyes are covered with a kind of “lenses” — fused transparent eyelids. External ears are absent, however, snakes can feel vibrations from the earth and sounds in relatively narrow frequency range.
Compared with other reptiles, snakes have the most developed body of thermal sensitivity, which is on the front hole between the eye and nose on each side of the head. I alkoholowych snakes turbolocator allow to determine even the direction of the source of thermal radiation. However, they perceive infrared radiation from surrounding objects, electromagnetic waves, namely as heat. Continue reading
Dog training is intended to all those who cherish puppies and dogs . Portal is created with the aim of increasing the availability of diverse popular and specialized information about different aspects of dog training.
On the portal You will find lot of interesting things about dogs and puppies: Photos from training and competitions, the catalogue of professional animal trainers and handlers, articles about the problems of dog breeding, ads puppies for sale and puppies service. On our forum dog training and raising puppies is the main theme.
What is dog training . In our understanding, the training is the road to mutual understanding between man and dog. But road will master going. Important on this path to know not only where to go, and how best to achieve the intended purpose. We hope that these materials will help You navigate this difficult, but interesting route.
As the owner to choose the most suitable puppy type of training? But what interests: obedience training, dog training for protection training or protection sports or maybe training? Who to contact for services, so you do not regret about wasted resources and time? Questions that are hard to find the answer.
As vladeltsami or puppy to obtain the necessary objective information? There is only one option to analyze more subjective. It would be nice to have the opportunity to get this knowledge without spending long hours in search. In this You will help our portal. The feature of this portal is that it is not marketed with any specific directions in training. Continue reading
Pets save us from loneliness and stress. And they are able to teach us important lessons. life – of course, provided that we’re watching them closely and love them for what they are.
Contrary to popular belief, according to which animals, usually give birth to single people, most cats and dogs living in families composed of at least three people. The main reason that prompted them to get Pets, 26% of owners of dogs, cats, rats, and hamsters called love for animals and the joy of having a true friend and take care of it. Beneficial effects on child development is also an important factor: its lead as a key argument to 8% of pet owners. 19% insist on the exclusive “social role” their Pets, relieving owners from loneliness. Another 34% found it difficult specific answer to the question, saying he just can’t imagine life without an animal in the house.
“Want a kitten!”
So saith the child, and we have a kitten. Or hamster. Or puppy. Our main motive in this case: the child should grow up kind and responsible, and your own pet will become him in this matter assistant. Concerned about the development of children’s responsibility and independence, parents tend to put concerns about just priobretennogo on the shoulders of the child. And reach an opposite result: it’s really hard to cope with regular and not always pleasant new responsibilities. He feels confused and comes to the conclusion that care about who is weaker and smaller than you, is burdensome. So if we want our children to be responsible for those who tamed, they need it. to teach. To begin with, to take care of your new friend together. Continue reading