The fishing cat (Prionailurus viverrinus) thrives in water, with a double-layered coat made up of dense underfur for warmth and waterproofing, topped by longer guard hairs with a glossy sheen. Water rolls off its back, keeping it dry and buoyant. Its feet have slight webbing between the toes to aid paddling (though not as fully webbed as an otter’s), and its claws remain partially exposed even when retracted, improving grip on slippery surfaces and muddy banks. Its short tail, about half the length of its body, helps steer while swimming.

Weighing between 5 to 16 kg (11 to 35 lbs), the fishing cat has a short, muscular body, relatively short legs, and a deep chest that gives it a low center of gravity for wading. Its spotted coat blends into the dappled light of riverbanks and reed beds. The ears are small, rounded, and set low on the head, and can fold down to keep water out when diving.