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The average sleep time of a captive house mouse is reported to be 12.5 hours per day. [ citation needed ] They live in a wide variety of hidden places near food sources, and construct nests from various soft materials.
BALB/c is an albino, laboratory-bred strain of the house mouse from which a number of common substrains are derived. Now over 200 generations from New York in 1920, BALB/c mice are distributed globally, and are among the most widely used inbred strains used in animal experimentation.
A black pet mouse in a hand. A fancy mouse is a domesticated form of the house mouse (Mus musculus), one of many species of mice, usually kept as a type of pocket pet.Fancy mice have also been specially bred for exhibiting, with shows being held internationally.
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Sleep can follow a physiological or behavioral definition. In the physiological sense, sleep is a state characterized by reversible unconsciousness, special brainwave patterns, sporadic eye movement, loss of muscle tone (possibly with some exceptions; see below regarding the sleep of birds and of aquatic mammals), and a compensatory increase following deprivation of the state, this last known ...
The harvest mouse ranges from 55 to 75 mm (2.2 to 3.0 in) long, and its tail from 50 to 75 mm (2.0 to 3.0 in) long; it weighs from 4 to 11 g (0.14 to 0.39 oz), [11] [12] or about half the weight of the house mouse (Mus musculus). Its eyes and ears are relatively large.
Bolam's mouse is the size of a house mouse although slimmer in appearance with larger eyes, feet and ears with a longer tail. It is also quieter than a house mouse when handled and lacks a musty odour. [4] Other distinguishing features include the absence of notched upper incisors which are characteristic of the house mouse. [4]
The house mouse (Mus musculus) has a gestation period of 19 to 21 days. Key events in mouse brain development occur both before and after birth, beginning with peak neurogenesis of the cranial motor nuclei 9 days after conception, up to eye opening which occurs after birth and about 30 days after conception.