Rat Vs. Mouse

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Since 2020 is the Year of the Rat, some people have been asking about what the difference is between a rat and a mouse. Here’s some useful info for you courtesy of Diffen.com:

Mouse Versus Rat Comparison Chart

Mouse Rat
Identification Method Small feces Larger feces
Head Small, triangular, small relative to body Short, stubby, broad, large relative to body
Ears Ears are large relative to the head. Ears are small relative to the head.
Eyes Slightly bigger in relation to the head Smaller in relation to head
Muzzle Narrow with sharp muzzle Large and blunt with wide muzzle
Tail A mouse is small and has a skinny tail. A rat is bigger and has a thicker tail.
Digging burrows Mice do not dig deep and even if they do so, they may dig only to about a foot. Rats dig deep and long burrows.
Life Span 1.5 – 2.5 years 2-3 years
Genetic Differences Mice have 20 chromosome pairs & 2.6 million base pairs Rats have 21 chromosome pairs & 2.75 million base pairs
Best known species Common House Mouse (Mus Musculus) Black Rat (Rattus Rattus); Brown Rat (Rattus Norvegicus)
Romans call it Mus Minimus Mus Maximus
Spaniards call it Raton Rata

 

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