The yellow slug lives up to its name - its yellow body is mottled with grey patches. Often found in gardens and damp places in houses, it can be considered a pest, but is an important nutrient…

The all-black rook is a sociable bird, so can be spotted in flocks or nesting colonies, known as 'rookeries'. Unlike the similar carrion crow, it has a grey bill and 'baggy trouser…

The Alcathoe bat was 'discovered' in the UK in 2010 when it was confirmed as a separate species to the very similar whiskered and Brandt's bats. Little is known about its range and…

The notch-horned cleg-fly isa horse fly dark grey in colour, with grey-brown mottled wings and intricately striped, iridescent eyes. There are 30 species of horse-fly in the UK; this is one of the…

This broad, brown bug can often be seen sitting on dock leaves.

Barnacles are so common on our rocky shores that you've probably never really noticed them. They're the little grey bumps covering the rocks that hurt your feet when you're…

A familiar 'weed' of gardens, roadsides, meadows and parks, White clover is famous for its trefoil leaves - look out for a lucky four-leaf clover in your own garden!

The common carp is a very large fish that is popular with anglers due to its size and fighting spirit. It frequents ponds, gravel pits and lakes, but is not native to the UK, being introduced in…