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The Differences Between Mice And Rats

Rats vs Mice

When you hear the word rodents, what comes to mind? Probably mice or rats; but there are approximately 1,500 rodent species in the world including hamsters, guinea pigs, squirrels, and more. So why do mice and rats get top billing? Well, because they are the two "kinds" of rodents most likely to get into our homes. You may have noticed that we didn't say "species" of rodents. That is because the terms rat and mouse are classifications, just like the term rodent. Rat refers to large rodents with long thin tails, and mouse refers to small rodents with long thin tails. Mice and rat species share many similarities besides those tails. Both have whiskers, two large incisors, fur, black eyes, roundish ears, similar feet, similar noses, and many similar behaviors. However, in this article, we're going to focus on the differences. So if you see one of these creatures in your home—or signs that they may be in your home—you'll be able to tell them apart.

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Size of Rats vs. Mice

If you see a rodent run across your floor, you're not likely to have any trouble distinguishing if it was a rat or mouse, as compared to other rodents. It would take you less than a second to tell the difference between a squirrel and a rat; but distinguishing mice and rats from each other requires more effort. The most obvious difference is size. Your standard adult house mouse will be a mere 12 to 20 cm while those rats can be as long as 40 cm.

Weight of Rats vs. Mice

Rats aren't just longer and bigger than mice, they are heavier. If the rodent you are looking at looks like it should go on a diet, it is probably a rat. This is, of course, if your home or business isn't filled to the brim with foods those mice can engorge themselves on.

Tail Length of Rats vs. Mice

Though these two creatures each have a long, thin tail, there are distinct differences that can easily be observed. The tail on a mouse is noticeably longer when compared to its body. It isn't that mice necessarily have a longer tail. It is more that a rat is much larger in size and this makes their tail seem shorter.

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Rodent Droppings of Rats vs. Mice

These two creatures have similar droppings which they leave in areas they forage in, but, as you can probably guess, rat droppings are larger, and tend to have more rounded ends. If the droppings you are finding on pantry shelves and floors are 7mm-19mm, they are most likely rat droppings. If they measure in at 4-7 mm, they are more likely to be mouse poop.

Diet of Rats vs. Mice

Mice and rats are both omnivores, but they tend to dine on different things. Mice prefer grains, fruits, vegetables, seeds, and nuts, but they are known to eat meat, dead bodies of other mice, and even their own tails during times of starvation. Rats eat the same as mice, but being a larger creature, they will gravitate to larger items like stored cheese, meats, and dry pet foods.

Damage of Rats vs. Mice

In a home or business, rats will pose the most threat as far as damage is concerned. Being a larger creature, they can chew larger holes faster and are able to chew through materials mice cannot like: wire mesh, brick, cinder blocks, aluminum, and even concrete. However, mice can still be a significant problem when they chew through wiring in walls or create holes in insulation that lets heat escape.

Lifespan & Breeding of Rats vs. Mice

Mice will live to be 1.5 to 2.5 years old while rats can live 2 to 3 years. In their lifetime, a mouse can produce more than 300 offspring, and those offspring are able to mate as early as 4 weeks. That means a mouse infestation can grow out of control quite quickly. A pair of rats can produce as many as 2,000 descendants in a year if left to breed unchecked.

What To Do If You Have Mice Or Rat Problems

If you are having problems with mice or rats, Parkway Pest Services can help. We offer complete solutions for rodent issues in NYC, Long Island, and Greenwich.

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