The mohawk-sporting caterpillar of this moth is often seen on shrubs and trees in late summer. As adults the orange-brown males fly by day, but the flightless females don't stray far from…

The river lamprey is a primitive, jawless fish, with a round, sucker-mouth which it uses to attach to other fish to feed from them. Adults live in the sea and return to freshwater to spawn.

Famed for their cunning and stealth, these orangey-red dogs with their bushy tails can be seen in towns and the countryside. They come out mostly at night but can also be seen during the day if…

An unmistakeable insect of heaths, sand dunes and grasslands, the Emperor moth is fluffy, grey-brown, with big peacock-like eyespots on all four wings. Males can be seen during the day, but…

The St Mark's fly is small, black and shiny. It is so-called because it emerges around St Mark's Day, April 25th. Large numbers of adults can be found in woodland edges, hedgerows,…

Sika deer were introduced to the UK in the 19th century. They are native to eastern Asia.