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As members of the rodent family, mice and rats look very similar and are often mistaken for one another. Both are harmful, transmitting serious diseases to humans and pets, contaminating surfaces in our home, and chewing through structures and wires, causing damage and putting you at risk for fires. How do you know if you are dealing with a mouse vs rat? Here are 5 key differences between these two rodents.
Mice are noticeably smaller than rats, growing 3 to 4 inches in length. Mice weigh anywhere from 0.5 oz to 3 oz. A mouse’s tail is equal in length to its body and is thin, long, and covered in hair. Mice have small heads and large ears with pointy, triangular snots and smooth fur. Mice can be white, gray, or brown in color. Rats, on the other hand, are much larger, measuring 9″ to 11″ in length and weighing anywhere from 12 oz to 1.5 lbs. A rat’s tail can be 7″ to 9″ in length and is long, thick, scaly, and hairless. Rats have small ears and large heads with blunt snouts. They have coarse fur that can be dark brown or multicolored.
Mice have smaller droppings, about 1/4″ in length. Mice droppings are black with pointed ends and resemble a grain of rice. Mice can leave up to 100 droppings at a time. Rat droppings are larger with an elongated oval shape. These droppings are about 3/4″ long, black in color, and resemble a banana. Rats can leave up to 50 droppings at a time. Rodent droppings of both species are known to carry diseases that can be harmful to humans.
While both species are omnivores, their diets tend to vary. Mice commonly eat fruit, seeds, and plants. In your home they may nibble on bread crumbs or other cereals and grains. Their palates are not as wide as rats. Mice can also survive on 3 mL of water per day. Rats, on the other hand, will eat almost anything, even scavenging through your garbage for fruit, eggs, meat, and other leftovers. They will also eat plants and seeds. Rats need anywhere from 15 to 60 mL of water per day.
While both rats and mice will come into your home, they tend to frequent different areas once inside. Mice can be found in garages, under trees, under decks, and in walls and other voids that are too small for other rodents to get into. The species of rat you are dealing with determines where they prefer to live. Norway rats can be found in sewers, inside walls, and in cellars. They prefer lower levels of your home to reside in. Roof rats prefer higher environments, often being found in cabinets and attics.
Mice are nocturnal animals. They are timid but social within their own populations. They are very territorial and more curious than rats, making them easier to trap. They are skillful climbers and can access areas rats can’t because of their small size. Rats are also nocturnal but are more cautious and fearful of new things than mice are, making them more difficult to trap. Rats are also skillful climbers. Both rats and mice will gnaw through structures and wiring in your home, causing damage and putting you at risk for fire. Mice have weaker teeth and can’t chew through glass or metal to get to food. Rats have much stronger jaws and have been known to chew through wood, glass, sheet metal, aluminum, and even cinder blocks.
Regardless of which pest you are dealing with, proper identification and treatment is essential to eliminating them. Contact your local pest control company who can determine which type of pest you have and set you up with the appropriate rodent control plan to eliminate them.
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