What is a large mouse with big ears called? - briefly
Such a rodent is commonly referred to as a big‑eared mouse. The term also applies to species like the South American “big‑eared mouse” (Phyllotis).
What is a large mouse with big ears called? - in detail
A rodent that exceeds the typical size of a house mouse and displays proportionally enlarged ears is commonly identified as a rat. Rats belong to the genus Rattus and are distinguished from smaller murine species by several anatomical and ecological characteristics.
Rats possess a body length of 20–30 cm, tail length comparable to or longer than the torso, and ear pinnae that can reach 2–3 cm, markedly larger than those of Mus species. Their skulls are broader, with more robust incisors capable of gnawing tougher material. Fur coloration ranges from brown to black, often with a lighter ventral surface.
Habitat preferences include urban environments, sewers, agricultural fields, and forests. They are omnivorous, consuming grains, fruits, insects, and carrion. Social structure is hierarchical; colonies establish burrows or nest in concealed locations. Reproductive cycles are rapid, with gestation of 21–23 days and litters of 5–12 offspring.
Key differences from typical mice:
- Body mass: rats 200–500 g; mice 15–30 g.
- Ear size: rats proportionally larger, aiding thermoregulation and sound localization.
- Tail: rats have scaly, hairless tails; mice have hairy tails.
- Dental enamel: rats exhibit stronger wear resistance.
Common species referred to when the description is applied include the brown rat (Rattus norvegicus) and the black rat (Rattus rattus). Both exhibit the mentioned size and ear dimensions, confirming the classification as rats rather than any other murid.