So-named because its gnarled trunk can split as it grows, the Crack willow can be seen along riverbanks, around lakes and in wet woodlands. Like other willows, it produces catkins in spring.

The common octopus is a highly intelligent, active predator. It even has a secret weapon - special glands produce a venom that it uses to incapacitate its prey!

The muntjac deer was introduced into the UK from China in the 20th century. It has gained a stronghold in southeast England, where it can cause damage to our woods through browsing.

Living up to its name, the cherry gall wasp produces growths, or 'galls', on oak leaves that look like red cherries. Inside the gall the larvae of the wasp feed on the host tissues but…

Due to the devastating effects of Dutch elm disease in the 20th century, the English elm is rarely found as large tree, but is more common as a shrub along hedgerows, or sometimes in woodlands.…

The broad-bordered bee hawk-moth does, indeed, look like a bee! A scarce moth, mainly of Central and Southern England, it feeds on the wing and can be seen during spring and summer.