Below is a chart listing rodents, with information about each. Not all rodents have pictures associated with them.

For more information on particular rodents, feel free to contact us.

Characteristics	Black Rat	Norway Rat	House Mouse
Species	Rattus rattus	Rattus norvegicus	Mus domesticus
Common Names	Roof rat-ship rat-gray bellied rat-white bellied rat-Alexandrine rat	Wharf rat-house rat-brown rat-sewer rat-gray rat	N / A
Adult Size
Weight	150-250 grams (5-9 oz.)	200-500 grams (7-18 oz.)	12-30 grams (0.4-1 oz.)
Head & Body	16-200 cm (6-8 in.)	18-25 cm (7-9.5 in.)	6-9 cm (2-3.5 in.)
Tail	19-25 cm (7-10 in.)	15-21 cm (6-8 in.)	7-10 cm (3-4 in.)
Ears	Large, nearly naked; can be pulled over eyes	Small, covered with short hairs; do not reach eyes	Large, some hair
Snout	Pointed	Blunt	Pointed
Tail	Uniformly dark	Dark above, pale beneath	Uniformly dark
Fur	Agouti to gray to black; venter white, gray or black, smooth	Brown with scattered black (agouti); venter gray to yellow/white; shaggy	Light brown, light gray, smooth
Droppings	Spindle shaped 1 cm (0.5 in.)	Capsule shaped 2 cm (3/4-1 in.)	Rod shaped 3-6 mm (0.5 in.)
Senses
Sight	Poor, color blind	Poor, color blind	Poor, color blind
Smell-Taste-Touch-Hearing	Excellent	Excellent	Excellent
Food-Diet	Omnivorous;especially fruits, nuts, grains, vegetables (15-30 grams/day)	Omnivorous; preference for meats (22-30 grams / day)	Omnivorous; prefers cereal grains (3 grams / day)
Climbing	Very agile - active climber	Readily climbs, limited agility	Good climber
Nests	Walls, attics, vines, trees	Usually burrows	Within structures, stored food, burrows
Swimming	Can swim	Excellent swimmer	Can swim
Home range (radius)	30-50 meters (98-164 ft.)	30-50 meters (98-164 ft.)	3-10 meters (10-33 ft.)
Reproductive Biology
Gestation Period	22 days	22 days	19 days
Breeding Period	Spring & fall peaks	Spring & fall peaks	Year long
Young per litter	4-8	8-12	4-7
Litters per year	4-6	4-7	8