Rats and mice are both omnivorous, nocturnal rodents that are commonly used in scientific research. Mouse and rat are colloquial terms that can be applied to many members of the muroid family. For example, house mice, field mice, deer mice, and dormice are different types of mice. Rats are larger than mice, and include brown rats, kangaroo rats, black rats, African pouched rats, naked mole rats, pack rats, and Polynesian rats.
|Feature||House Mouse||Brown Rat|
|scientific name||Mus musculus||Rattus norvegicus|
|body size||8-10 cm||23-28 cm|
|weight||~25 g||~350 g|
|head||small & tapered||large & broad|