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Other studies have proposed that ultrasonic vocalizations are by-products of a rat’s physiological response to temperature (for example, helping to return venous blood to the rat’s heart). However, it has now been widely accepted that rats emit ultrasonic vocalizations as social signals. [ 2 ]
The specific voluntary crowding of rats to which the term "behavioral sink" refers is thought to have resulted from the earlier involuntary crowding: individual rats became so used to the proximity of others while eating that they began to associate feeding with the company of other rats. Calhoun eventually found a way to prevent this by ...
One study analyzed sounds made by human babies and bonobos when tickled. It found that although the bonobo's laugh was a higher frequency, the laugh followed the same sonographic pattern as human babies and included similar facial expressions. Humans and chimpanzees share similar ticklish areas of the body such as the armpits and belly. [6]
Not so long ago, neuroscientists at the University of Richmond taught rats how to drive specially made cars and discovered that these rodents actually love it. The study on rodent cognitive ...
Scientists teaching rats to drive have discovered that not only are the rodents capable of operating their tiny cars, but they actually enjoy it and even get a kick out of revving their engines.
Social grooming has several functions; it removes parasites and debris from the groomed animal, it reaffirms the social bond or hierarchical relationship between the animals, and it gives the groomer an opportunity to examine olfactory cues on the groomed individual, perhaps adding additional ones. This behaviour has been observed in social ...
Chimpanzees, dogs, gulls, horses, rats, roosters, sheep and sparrows all use similar short repeated sounds to tell others of the same species to come closer. [ 81 ] Even fish, which lack a neocortex , have been taught to distinguish and respond differently to different human faces (archerfish [ 82 ] ) or styles of music (goldfish [ 83 ] and koi ...
An animal that exhibits a high degree of sociality is called a social animal. The highest degree of sociality recognized by sociobiologists is eusociality . A eusocial taxon is one that exhibits overlapping adult generations , reproductive division of labor , cooperative care of young, and—in the most refined cases—a biological caste system .