A list of my favorite images of mice, rats, hamsters, gerbils etc.
Rodents are mammals of the order Rodentia, characterized by a single pair of continuously-growing incisors in each of the upper and lower jaws. The name is derived from the Latin rōdere, to gnaw.
About forty percent of all mammal species are rodents and they are found in vast numbers on all continents except Antarctica. They are the most diversified mammalian clade and can be found in a variety of terrestrial habitats, including human-made environments. There are species that are arboreal, fossorial, and even semi-aquatic.
Well known rodents include mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs and hamsters, but rabbits, hares and pikas, which could be confused with rodents and were once included with them, are now considered to be in a separate order, Lagomorpha.
Most rodents are small animals with robust bodies, short limbs and long tails, but there are exceptions to this. They use their sharp incisors to gnaw food, excavate burrows and defend themselves. Most eat seeds or other plant material, but some have more varied diets.
They tend to be social animals and many species live in societies with complex ways of communicating with each other. Mating among rodents can vary from monogamy, to polygyny, to promiscuity. Many have litters of underdeveloped, altricial young, while others have precocial young which are relatively well developed at birth.
The earliest fossil record of rodents dates to the Paleocene on the supercontinent of Laurasia. They greatly diversified in the Eocene, as they spread across continents, sometimes even finding means to cross oceans. Rodents reached both South America and Madagascar from Africa; they were also the only terrestrial placental mammals to reach and colonize Australia.
Rodents have been put to use as food, in clothing, as pets and as laboratory animals in research. Some species are serious pests, eating and spoiling food stored by humans, and spreading diseases. Accidentally introduced species of rodents are often considered to be invasive, as they sometimes threaten the survival of native species such as island birds previously isolated from land-based predators.
8 votesAnimals - R (18 lists)
list by kathy
Published 2 years ago
11 votesMy Rodent Collection (25 lists)
list by kathy
Published 1 year, 2 months ago
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