According to the world health organization, annually in the world dies from rabies 55 thousand people . that is, one person in every 10 minutes. Economic damage this disease ranks fifth and is the tenth leading cause of death amongst infectious diseases. From 30 to 60 percent of victims are children under the age of 15 years.
Rabies is a deadly viral disease, the pathogen which attacks the Central nervous system and leads usually to death. Infection of humans comes from domestic and wild animals, mostly carnivores, as a result of close contact with infected saliva or bites and causing scratches.
The incubation period of rabies lasts from 10 days to 1 year (usually 1-3 months).
Clinical signs of the disease appear most often after 3 to 8 weeks after infection. A reliable diagnosis of rabies is established only in the laboratory.
In dogs and cats clinically distinguish two main forms of the disease: the lush and quiet. Often rabies can occur in atypical forms.
Clinical signs of rabies in humans. In the beginning of the disease in humans marked depression, high temperature and fever, itching at the bite site.Later manifested a respiratory embarrassment, fearfulness. Stage of excitation is characterized by a fear of water. At the end of the disease is para Continue reading
You want to know what the biggest snake in the world? Anaconda, boa or Python? Below is information about the largest snakes in the world. Read on.
You probably watched with awe the movie Anaconda. The great mighty and powerful snake, which can easily be called the largest snake. Watching the film, you must be interested in whether there are large snakes in the world. Well, apart from the fantasy and some fictitious aspects, there are definitely snakes that grow up to 6-9 meters. So, what is the largest snake in the world? Let’s learn more about the different types of snakes, huge in size.
Among the different types of snakes on Earth today, species belonging to the class of Pythons and Boas, are the largest of them. Here are some of the biggest snakes on Earth, along with the images.
Reticulated Python. Reticulated Python or Python reticulatus is the largest species of pythons, as well as the world’s longest snake. The average length of this Python exceeds 6 meters. The largest reticulated Python that was found is more than 8 meters in length. Black, brown, red and yellow – the typical colour of this Python, and it is found in Southeast Asia and the Philippines. Interestingly, reticulated pythons are also very popular as Pets. Continue reading
We’ve learned that the relationship determines the resemblance: is it fair to expect a couple blue-eyed blondes have the same blonde kid with eyes of heavenly color. However, the nature of the known and far more intricate family ties. Quite often, ties of blood unite the species, do not resemble each other neither in outward appearance nor the way of life. Introducing animals that you would never have thought that they were siblings.
Already for anybody not a secret that whales and dolphins, although looks very similar to fish, are mammals. They breathe air, feed their young milk, and their tails are fused hind limbs. It is not surprising that scientists have searched for the ancestors of cetaceans among land animals. For a long time it was believed that their ancestors were mezonigie is curious of the extinct mammals that unites the signs of carnivores (eat meat) and ungulates (instead of feet had hooves). However, recently it was revealed that the closest relatives of whales and dolphins are hippos the representatives of the group of ungulates that includes pigs, camels, giraffes and deer. As shown by genetic analysis that whales and hippos there is a common ancestor that lived 50-60 million years ago. The degree rodstvenikam great that it was even proposed to create a common squad cytopathicity.
As you know, “born to crawl — can not fly”. But for nature there are no rules. Albatrosses and petrels — the true kings of the sky. Continue reading