Cat vs Common Water Rat

Felis catus compared with Hydromys chrysogaster

Key Differences

Cat is Not Evaluated while Common Water Rat is Least Concern.

Taxonomic Classification

Rank	Cat	Common Water Rat
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order	Carnivora (ネコ目)	Rodentia (ネズミ目)
Family	Felidae (Cats)	Muridae (Mice & Rats)
Genus	Felis (Small Cats)	Hydromys
Species	Felis catus	Hydromys chrysogaster

Evolutionary Relationship

Cat and Common Water Rat share a common ancestor at the Class level: Mammalia. (哺乳類)

表示 Class: Mammalia

Conservation Status

Cat

NE — Not Evaluated

Trend: Stable →

Common Water Rat

LC — Least Concern

Physical Characteristics

Attribute	Cat	Common Water Rat
Diet	Carnivore	—
Average Lifespan	15 years	—
Average Length	46 cm	—
Average Weight	4.5 kg	—

Habitat & Geographic Range

Cat

Habitat

Inhabits deserts and xeric shrublands within the Afrotropic biogeographic realm.

Range

Widely distributed across Africa (9 countries), Asia (7 countries), Europe (11 countries), North America (13 countries), Oceania and the Pacific (11 countries), and South America (6 countries).

Common Water Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Cat

人類が最も成功した家畜の一つであるイエネコは、約1万年前に近東のヤマネコ（Felis silvestris lybica）から家畜化された小型で敏捷な肉食動物だ。70を超える公認品種が存在し、ネコは強い捕食本能を維持したまま地球上のほぼすべての陸地環境に分布している。世界で最も人気のあるペットで、世界中で約6億匹が飼育されていると推定される。

<em>Hydromys chrysogaster</em>, commonly known as the common water rat or rakali, is a semi-aquatic rodent in the family Muridae, native to Australia and New Guinea. It is classified as Least Concern by the IUCN, reflecting its relatively stable population across a broad range of freshwater and estuarine habitats on the Australian continent and associated islands. The species typically inhabits the banks of rivers, lakes, wetlands, and estuaries, where it constructs burrows in streambanks. It is highly adapted for an aquatic lifestyle, with partially webbed hind feet, a flattened head, and a dense waterproof coat. <em>Hydromys chrysogaster</em> is a carnivore, typically feeding on fish, crustaceans, mussels, frogs, and aquatic invertebrates, which it often carries to elevated feeding platforms to consume. The species is nocturnal and crepuscular, most active during early morning and evening hours near the water's edge. Biological traits including average lifespan, body length, and weight remain poorly documented in standardized databases, though adults are generally robust for a rodent, reportedly reaching body lengths of 20–35 cm excluding the tail. Geographic range details for this particular record remain incompletely documented in available data sources. Ecologically, the common water rat is an important apex predator in small-scale freshwater food webs and serves as an indicator species for wetland health in Australian riparian systems.