Cutch Rock-rat

The Cutch Rock-rat is a small murid rodent native to rocky and hilly terrain of western and central India. It is named after the Kutch region of Gujarat where it was first described. This species is adapted to arid and semi-arid rocky habitats, using crevices for shelter, and remains relatively poorly studied compared to more common rodent species.

India (Gujarat, Maharashtra, Madhya Pradesh, and other central/western states)

Endemic to India, primarily found in Gujarat (Kutch region), Maharashtra, Madhya Pradesh, and parts of the Deccan Plateau in central and western India.

Altitude and depth

Typically found at low to moderate elevations, roughly 0-900m above sea level, in rocky hill terrain.

Seasonal movements

No long-distance migration; activity may be reduced during extreme summer heat, with rodents retreating deeper into rock crevices for thermal protection.

Rocky outcrops, hills, and stony/boulder-strewn terrain in dry deciduous forests and scrubland. Also found in association with human settlements near rocky areas, using crevices and boulder piles as shelter.

Adaptations to its environment

Possesses strong claws and agile climbing ability suited for navigating rocky crevices and boulder fields. Nocturnal habits and crevice-dwelling behavior help it avoid extreme daytime temperatures in arid habitats.

Listed as Least Concern (LC) by IUCN due to a relatively wide distribution across suitable rocky habitats in India and presumed stable population, though detailed population data is limited.

Estimated population

No precise global population estimate exists; considered locally common in suitable rocky habitat with a presumed stable trend.

Habitat degradation from quarrying and mining of rocky outcrops, agricultural expansion, and human settlement encroachment into rocky habitats.

Diseases and parasites

No specific diseases or parasites well-documented for this species; likely susceptible to common rodent ectoparasites and endoparasites found in similar murids.

No species-specific conservation programs are known; benefits indirectly from protection of rocky habitats within some Indian wildlife sanctuaries and protected areas.

Recommended actions

Further ecological surveys to better understand population status and distribution, and protection of rocky habitat patches from quarrying activities.

Grayish-brown to sandy-brown dorsal fur blending with rocky substrate, with paler underparts. Body is moderately robust with a long, mostly hairless or sparsely-haired tail.

Size

Head-body length approximately 12-15 cm, with tail length roughly equal to or slightly longer than the body.

Weight

Approximately 40-80 grams, similar to other Cremnomys species.

Distinctive features

Distinguished from related rat species by specific cranial and dental features, coloration matching rocky habitats, and habitat preference for rock crevices rather than burrows in soil.

Differences between males and females

Minimal sexual dimorphism; males and females are similar in size and coloration with no pronounced external differences.

Generally solitary or found in small family groups, using rock crevices as individual or shared shelter sites.

When it is active

Primarily nocturnal, foraging at night and resting in rock crevices during the day to avoid heat and predators.

Diet

Omnivorous, feeding on seeds, grains, plant matter, and likely some insects, similar to other rock-dwelling murid rodents.

How it feeds and hunts

Forages opportunistically on the ground and among rocks for seeds, plant material, and small invertebrates; not an active hunter.

Communication

Likely relies on scent marking, ultrasonic vocalizations, and tactile communication typical of murid rodents, though specific studies on this species are scarce.

Interactions with other species

Predated upon by small carnivores, raptors, and snakes native to rocky habitats; may compete with other small rodents for food and shelter resources.

Role in its ecosystem

Plays a role in local ecosystems as a seed disperser and prey species for small predators, contributing to rocky habitat food webs.

Breeding likely occurs during favorable seasons with adequate food availability; litter sizes are presumed small to moderate (3-6 young) based on related species, though specific data is limited.

Raising the young

Presumed altricial young cared for primarily by the mother in a nest within rock crevices, similar to related murid rodents, though detailed behavioral studies are lacking.

Maturity and lifespan

Sexual maturity likely reached within a few months, consistent with small murid rodents; wild lifespan probably 1-2 years, though captive data is unavailable.

Classification

Class Mammalia > Order Rodentia > Family Muridae > Genus Cremnomys > Species Cremnomys cutchicus

Scientific synonyms

Rattus cutchicus, Golunda cutchica (older classifications placed this species in different genera before Cremnomys was established)

Recent studies

Limited recent taxonomic and ecological studies exist; most research is historical, focusing on initial species description and basic distribution records.

Compared with similar species

Similar to other Cremnomys species and related genera like Golunda, but distinguished by specific rocky habitat preference and cranial morphology; less arboreal than some related murids.

This species was first described from the Kutch (Cutch) region of Gujarat, giving it its common name. It is one of several poorly-studied rock-dwelling rodents endemic to India's rocky plateau regions.

Where and how to see it

Best observed at night using spotlighting techniques in rocky hill habitats of Gujarat or Maharashtra; patience is required as this species is elusive and not well-studied in the wild.

Risks to humans

No notable risk to humans; as with all rodents, may carry parasites but poses no significant direct threat.