Efallai bod bronwennod yn edrych yn hoffus ond maen nhw’n gallu bwyta llygod pengrwn, llygod ac adar mewn dim o dro! Maen nhw’n perthyn i ddyfrgwn a charlymod, sy’n amlwg o weld eu corff main, hir…

Red squirrels are native to the UK but are a lot rarer than their grey cousins. They live in a few special places across the UK thanks to reintroduction projects.

The rare wildcat is so similar to a domestic tabby that interbreeding is a serious threat to its survival. Although known as the 'tiger of the Highlands', it is shy and elusive, making…

The attractive roe deer is native to the UK and widespread across woodland, farmland, grassland and heathland habitats. Look for its distinctive pale rump and short antlers.

Caddisflies are a large order of insects that can be found in all kinds of wetlands. The larvae are known for making cases to pupate in, gathering stones, sand and leaves, and wrapping them with…

The common osier is a small willow tree that is found in fens and ditches, and on riverbanks. It has been widely cultivated and coppiced for its twigs, which are used in traditional basket-making…

The crab apple is familiar as a small tree that produces yellow-green, rounded fruit that is used for making jellies and wines. It can be found in woods and hedges, as well as in cultivated…

The scorpionfly, as its name suggests, has a curved 'tail' that looks like a sting. It is, in fact, the males' claspers for mating. It is yellow and black, with a long 'beak…

One of the most colourful fish in UK seas, the cuckoo wrasse looks like it belongs in the tropics. Don't be fooled though, it's very much a native species.

A scarce tree of England and Wales, the large-leaved lime is the rarest of our native limes. It is tall and broad, and can be found in forests and parks, where it is frequently planted.