Rodents questions This is a list of recently added questions about rodents. Which rodent has the highest ratio of brain mass to body mass?Beaver a large semiaquatic broad-tailed rodent that is native to North America and northern Eurasia. It is noted for its habit of gnawing through tree trunks to fell the trees in order to feed on the bark and build dams. The beaver has the highest ratio of brain mass to body weight among rodents, which is reflected in the behavior and the ability to act not only instinctively, but also logically. Created by: Tschuka very hard 19% ratrat132beaverbeaver42squirrelsquirrel21mousemouse24mammals riddles » Who is this rodent?Hamster. Most rodents have a tail, varying in shape and size. Usually it is long. Sometimes there is a catch tail, as in a commoner. Covering the tail of the fur can be lush - rodents living on trees usually have a fluffy tail - it can also be completely bald. Sometimes it serves communication. The beaver strikes the water and the rats are rattled to make an alarm. In some species there is only a residual tail or they do not have it at all. The Syrian hamster has a short tail that does not even reach 1 cm.Created by: Katarzyna Dąbrowskaaverage 69% Degu Degu447Guinea pigGuinea pig227HamsterHamster2964GerbilGerbil652pets riddles » What makes naked mole-rats interesting to scientists?Longevity and cancer resistance. Naked mole-rats are the most long-living rodents. They are known to live up to 31 years. Until 2016, when 2 cancer sick animals were found, they had been believed to be fully cancer resistant. Their immunological system evolved an additional cancer cell discovery feature that does exist among other animal species.Created by: smyruaverage 67% longevity and cancer resistancelongevity and cancer resistance5523extraordinary sense of smellextraordinary sense of smell619spatial memoryspatial memory485ability to see in darknessability to see in darkness1576medicine riddles » Which trait makes naked mole rat a subject of intensive scientific studies?Longevity and resistance to cancer. The lifespan of naked mole rat is around 30years, while other rodents rarely live longer than few years. Until recently it was believed that they are entirely resistant to cancer, however in 2016 cancer was found in two individuals. Studies have revealed that immune system of naked mole rats has an additional mechanism to identify cancerous cells.Created by: lanusienkaaverage 67% longevity and resistance to cancerlongevity and resistance to cancer5523an extraordinary sense of smellan extraordinary sense of smell619spatial memoryspatial memory485vision in complete darknessvision in complete darkness1576zoology riddles » Which animal has orange teeth?Nutria is easily recognizable due to its large orange teeth. Originally native to subtropical and temperate South America, it has since been introduced to North America, Europe, Asia, and Africa, primarily by fur ranchers.Created by: globalquiz.orghard 58% beaverbeaver6630nutrianutria12829capybaracapybara2180ratrat288teeth riddles » In South America, what is the typical reason for breeding guinea pigs?Food. Guinea Pig is traditional food in the Andes. Peruvians consume an estimated 65 million guinea pigs each year. Since the 1960s, efforts have been made to increase consumption of the animal outside South America.Created by: Kasiaaverage 60% PetsPets1699Laboratory animalsLaboratory animals2534FoodFood9479FursFurs1881animals of South America riddles » Where do guinea pigs come from?The Andes. Guinea pigs are neither pigs nor from Guinea. The origin of its common name is unclear, it may be a re-analysis of "Guyana", though they originate from the Andes and not Guyana.Created by: Kasiahard 40% Guinea (Africa)Guinea (Africa)2484New GuineaNew Guinea4184The AndesThe Andes5753MexicoMexico1908Peru riddles » Play animals quiz and see all the questions.