Rats very lovable animals. They love being in the group of their own species or humans..
Rats are sharp animals. They are more intelligent than rabbits, hamsters, mice, gerbils and guinea pigs for instance. They also have excellent memories. Once rats learn a direction-finding route, they never forget it.
Rats have very poor eyesight and are colorblind.
An adult rat can squeeze into your home through a hole as small as the size of a quarter.
Rats can live for up to 18 months, but most die before they are one year old.
Rats have strong teeth that allow them to chew through glass, cinder block, wire, aluminum and lead.
Rats are a very clean animal; they spend several hours per day grooming them. Diseases carried by rats
Bubonic plague
Rats are the primary source of plague infection in human populations. This horrific disease is spread to humans from rats by fleas. It's present in rodents throughout the India, and in many other parts of the world (see map). The bite of a plague-infected flea or the inhalation of just a few cells of plague bacterium (Yesinia pestis) can kill a human being. Plague is usually fatal within a few days of infection. Like smallpox, it can spread and kill large numbers of people very quickly. Fortunately, the disease can usually be treated with antibiotics.
Salmonella
Mice and rats are both frequent carriers. Spreads to humans by contact with mouse droppings, especially through consumption of contaminated food. Causes serious, sometimes fatal gastroenteritis. Household pets are also frequently infected with Salmonella by this means and often die as a result.
Rat-bite Fever
Fatal in 10 percent of untreated cases. The bacterium causing this disease enters the body through bites, as its name suggests, or from urine contaminating either food or preexisting skin wounds.
Leptospirosis
Rats and mice are both carriers of this potentially fatal disease.
Tapeworms
Rats host small tapeworms of the genus Hymenolepisthat can spread to humans eating foods contaminated with rat droppings (or when hands are merely dirtied by droppings and not washed before meals). These parasites hatch out in the gut where they grow.