How Much Does a Rat Weigh in Kg?
WouterRats are one of the heaviest rodents, and they can weigh up to one kilogram. The average size of a house rat is about half a kilogram (75 grams), but it can be as large as a pound. Male rats are heavier than females. Rats also lose weight rapidly when they’re sick, and can lose 50 grams a day or more. For this reason, you should take your rat to the veterinarian as soon as you notice any weight loss.
The largest living rat, the giant Timorese rat, weighed almost 6 kilograms (132 pounds) when it was alive. Today, the biggest rat weighs around two kilograms (four pounds) and lives in rain forests in the Philippines and New Guinea. These rat species are considered to be the biggest in the world, but their size and weight varies depending on the species.
The circulating blood volume of an adult rat is around 15 to 35 ml, which is about five percent of its total body weight. This volume may be lower in obese or older rats. A healthy rat consumes about 30-50 ml of feed per day. To ensure safety and effectiveness, the following volumes can be safely injected into a rat: 0.1 ml per site for intramuscular injections; and 1.5 ml per site for intravenous injections.
Rats are quite large for their species, and can reach three feet in length. They are also fairly active and require plenty of exercise. Adding toys to a rat’s cage can help it keep fit. Rat toys made of rope, wheels, or ladders can help keep your pet entertained and stimulate its development. Newborn rats weigh only six to eight grams, but they grow rapidly. They can gain up to ten grams in just one week.
