Grey-brown fur, slightly paler underneath the body. Long, sparsely furred, scaly tail. Prominent ears and large eyes (but eyes not as large as those of the Wood Mouse). Usually has a typical 'mousy' smell.
Mainly associated with humans, and widespread throughout Britain and Ireland. A few populations are found in fields well away from human habitation.
Buildings of all kinds where there is food to be found. Also, occasionally, open fields.
Birds of prey, especially owls. Stoats and weasels, foxes. Humans. Brown Rats occasionally prey on House Mice.
Five to ten litters of up to eight young per year.
Fore foot has 4 digital pads,with visible claws and 3 interdigital pads,all small and rounded in shape. Hind foot has 5 digital pads, with 4 small interdigital pads. 2 proximal pads on both fore and hind feet. Hand outline often present.
Hind foot - 1.8x1.8cm, fore foot - 1x1.3cm. Stride approx 7cm.
Droppings are rounded in cross section,approx 0.6cm long and 0.2cm wide.Similar in appearance to those of Wood Mice.Colour may vary depending on diet.Regular latrines are used.