What is the name of the biggest rat? - briefly
The largest known rat is the Bosavi woolly rat (Mallomys sp.), discovered in the Bosavi crater region of Papua New Guinea. It can attain a body length of roughly 50 cm and weigh up to 1.5 kg.
What is the name of the biggest rat? - in detail
The largest rat documented by scientists is the Bosavi woolly rat, a member of the genus Mallomys discovered in the remote Bosavi region of Papua New Guinea. Field researchers captured a single specimen in 2009; the animal measured about 82 cm from nose to tail tip and weighed roughly 1.5 kg, more than twice the mass of a typical brown rat (Rattus norvegicus). Its dense, soft fur and robust build distinguish it from other murid rodents.
Key characteristics of this species include:
- Taxonomy: Mallomys sp.; the precise species designation remains unresolved pending further genetic analysis.
- Habitat: Subtropical montane rainforest at elevations near 2,200 m, where abundant leaf litter and fallen logs provide shelter and foraging grounds.
- Diet: Omnivorous; consumes fruits, seeds, fungi, and small invertebrates, reflecting the diverse resources of its high‑altitude environment.
- Reproduction: Limited data, but related Mallomys species produce small litters (1–3 offspring) after gestation periods of approximately 30 days.
The specimen received the informal nickname “Giant Rat of the Bosavi,” highlighting its exceptional size relative to other rat species. Conservation assessments list the animal as data‑deficient; its remote habitat offers some protection, yet logging and climate change could threaten the population. Continued field surveys are essential to determine distribution, population density, and ecological role within the montane ecosystem.