A rat alternates between chattering, squeaking and hissing. The chattering noise is produced when a rat grinds his teeth together and can indicate both stress and relaxation, while squeaking and hissing convey fear, pain or alarm. Chattering is also known as bruxing.Know More
A rat can squeak when happy, but these vocalizations are high-pitched and inaudible to the human ear.
Rats can emit ultrasonic vocalizations. Different frequencies are associated with different emotions or activities. A squeak at 20 kilohertz signifies distress, while the same noise at 50 kilohertz indicates happiness. Sex, aggression and contact calls are all produced at different frequencies.
However, a rat's squeaks can sometimes be confused with the abnormal breathing sounds that he makes when ill. Short, abrupt squeaks are a pet rat's way of communicating with a human, but when the sound is synchronized with the rhythm of a rat's breathing, he is most likely suffering from a respiratory disease. In general, a healthy rat does not make much noise.
Rats combine noise and smell to communicate with each other. A rat emits pheromones to warn others of danger or mark his territory, and sometimes to attract or interact with the opposite sex. In contrast to their highly developed sense of smell and hearing, rats have poor vision and avoid the light.Learn more about Rodents
The Gambian pouched rat is the largest known rat species, reaching lengths of up to 3 feet. Their average weight is between 3 and 4 pounds, although they can weigh up to 9 pounds.Full Answer >
"Mischief" is the designation for a group of rats. "Colony," "plague," "pack" and "swarm" are also suitable names. A rat king is an unusual phenomenon where a large number of rats become intertwined by their tails due to extreme conditions and inordinate amounts of blood, dirt and excrement.Full Answer >
Both of the most common types of rats, the black rat and the brown rat, are omnivores, eating fruits, grains and any waste or unprotected human foods they encounter, along with invertebrate prey when necessary or available. Brown rats are more carnivorous than black rats, will eat more types of meat and have even been observed fishing. These animals are ubiquitous and are major pests in destroying livestock feed.Full Answer >
Rats can carry fleas. One of the most well-studied species of rat flea is Xenopsylla cheopis, the Oriental rat flea or tropical rat flea. This is the flea that carries bubonic plague.Full Answer >