Did you find a mouse or a rat in Alaska?
First, I hope it was outside and NOT in your house. 🙂
Second, I’m guessing you’re here to try and identify the correct species. Luckily, you’ve come to the right place! I’ve compiled a list of the most common mice and rats that live in Alaska, with photos and range maps to help find the one you’re looking at.
Unfortunately, mice and rats can be hard to identify. First, many species look similar to each other. In addition, due to their shy nature and small size, it can be hard to get a good look. You may want to consider purchasing the book below if you need additional help with rodent identification.
Here are 4 COMMON Mice and Rats Found in Alaska!
#1. Brown Rat
- Rattus norvegicus
The Brown Rat is among the most widespread rats in Alaska!
It goes by many names, including the common rat, street rat, and sewer rat. You may also know it as the gray rat or Norway rat.
Interestingly, the Brown Rat isn’t native to North America. Instead, it’s thought to have originated in China and Mongolia.
Look for Brown Rats anywhere people are living, particularly in urban environments. They’re best known for living in sewer tunnels and subway systems, scavenging food from the trash.
Although many people find rats off-putting, others keep a sub-species of Brown Rats as pets. This subspecies, called the Fancy Rat, was bred specifically for the pet trade. Besides companion animals, rats can be trained for many jobs to assist humans, like detecting gunpowder for forensic teams and providing therapy support.
It’s a misconception that Brown Rats spread bubonic plague. In actuality, it’s more commonly spread through ground squirrels! Regardless, Unfortunately, they can still transmit infections of many kinds though as their blood can carry several diseases,
#2. Black Rat
- Rattus rattus
The Black Rat is a naturalized species in North America. It’s thought to be native to India but was transported here on cargo ships and has become so widespread that it’s no longer considered a foreign species.
It’s considered a pest in the agricultural market because it feeds on a wide variety of crops. Like other rodents, Black Rats can carry pathogens in their bodies. While they may not appear sick, they can spread infections like toxoplasmosis, typhus, and bubonic plague.
In many areas where the Black Rat was once the dominant species, the Brown Rat has taken over. Black Rats are slightly smaller and reproduce less often, which are two of the reasons this species isn’t as widespread as Brown Rats.
Black Rats go by many common names, such as ship rat, roof rat, and house rat.
#3. Eastern Meadow Vole (Field Mouse)
- Microtus pennsylvanicus
You probably know this species as a Field Mouse or Meadow Mouse, but it’s a vole, which is a similar type of animal. The Eastern Meadow Vole uses burrows for nesting, shelter, and rest. They create woven grass nests placed in the burrows or under logs.
As their name suggests, they prefer grassland or open forest habitats. Like most mice in Alaska, the Field Mouse is a dietary generalist, which means they will eat many different types of food. Garden plants, flowers, crops, and grasses are common food sources.
Field Mice are an important food source for many predators, including birds of prey, snakes, and wild and domesticated cats.
Although they’re very easily recognized and a well-known species, the Field Mouse is not commonly found in homes. It prefers open space and grasses to eat, so it will ignore a populated area in favor of its preferred habitat.
#4. House Mouse
- Mus musculus
Most mice in Alaska can live around people, but few thrive as well as the House Mouse!
If you picture a small, mischievous cartoon mouse when you think of mice, then you’re probably familiar with this species! House Mice have the characteristic large ears, thin tails, and tiny bodies of a typical “mouse.” They do incredibly well in highly populated areas, and there are now more semi-tame populations than wild. These populations live near people and depend on them for food and shelter.
House mice are the most common species to find inside your home because they’re so adaptable to human presence. They readily eat food scraps, build their nests in walls or dark attics and basements, and spend most of their time hidden from view. In fact, you’ve likely shared your home with a House Mouse at least once over the years. Although most people would prefer not to have them, they aren’t the worst roommates!
Like their eating habits, they are adaptable in their social behavior. Populations of House Mice that have an excess of food, like those that live in buildings, form a hierarchy with leaders and followers. However, in the wild, where food is less plentiful, females aggressively protect their territory from one another.
- RELATED: The 27 MOST Common Birds in Alaska!
Do you want to learn about other MAMMALS in Alaska? Check out this field guide!
- 20 COMMON Mammals in Alaska! (ID Guide)
Which of these mice and rats have you seen before in Alaska?
Tell us below in the COMMENTS section!