Mouse-like hamsters live the longest of all the mouse species.

This is the largest species of mouse-like hamster.

The closest relatives of mouse-like hamsters may be the fossil Cricetodontidae.

The mouse-like hamster (Calomyscus), the only member of its family, has a straight front margin on the zygomatic plate.

Mouse-like hamsters hold the record for maximum life span among muroid rodents (Volf, 2003).

The mouse-like hamsters are not real hamsters, although they look like hamsters.

Calomyscus grandis or the noble calomyscus is a species of mouse-like hamster from Iran.

Others are the mouse-like hamsters (Calomyscus spp.)

The mouse-like hamsters are not true hamsters, but represent an early split from the rest of the mouse-like rodents.

Photos of the Turkmen Mouse-like hamster (German page)

Subfamily Calomyscinae (mouse-like hamsters)

Mouse-like hamsters (calomyscids)

The Balochi mouse-like hamster (Calomyscus baluchi) is a species of rodent in the Calomyscidae family.

Family Calomyscidae: mouse-like hamsters (Asia)

Mouse-like hamsters are a group of small rodents found in Syria, Azerbaijan, Iran, Turkmenistan, Afghanistan, and Pakistan.

Calomyscus elburzensis, also known as Goodwin's Calomyscus or Goodwin's brush-tailed mouse is a species of mouse-like hamster.

The species had traditionally been called Hotson's Mouse-like Hamster because of the presumed relationship between members of the genus Calomyscus and the hamsters.

Jordan et al. (2008) have since adopted this as the primary common name, but also list Hotson's Mouse-like Hamster (but not Hotson's Calomyscus).

There are no endemic mammal orders in the region, but several families are endemic: Calomyscidae (mouse-like hamsters), Prolagidae, and Ailuridae (red pandas).

It is also known as the Iranian Mouse-like Hamster, though there are several species of mouse-like hamster found in different parts of Iran.

The Zagros Mountains mouse-like hamster (Calomyscus bailwardi) is a relatively little-known rodent which was the first species of mouse-like hamster to be described.

Thomas then lists seven new species, two of which, Hotson's Jerboa (Allactaga hotsoni) and Hotson's Mouse-like Hamster (Calomyscus hotsoni) he names after their collector.

Because of their seemingly early break from the rest of the mouse-like rodents, mouse-like hamsters have been placed in a family of their own, Calomyscidae, and have been referred to as living fossils.

This and their low reproductive output suggests that mouse-like hamsters are more similar in life-history traits to much larger rodents such as sciurids and hystricognaths who can both live over 10 years in captivity.

Hotson's Brush-tailed Mouse (Calomyscus hotsoni) also known as Hotson's Calomyscus or Hotson's Mouse-like Hamster is a species of rodent in the Calomyscidae family.