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!

Gwaith gwahaddod yw’r sypiau brown o ddaear sy’n gallu addurno lawnt. Mae’r mamal brown, byrdew yma’n treulio ei oes yn creu tyllau o dan y ddaear gyda phawennau siâp rhaw, yn hela am bryfed…

This beautiful orange and brown butterfly is now a rare sight in the UK

This small sea snail is easily identifiable by the 3 brown spots on the top of its shell.

This streaky brown bird is a summer visitor to Britain, favouring open woodlands in the north and west.

The black-headed gull is actually a chocolate-brown headed gull! And for much of the year, it's head even turns white. Look out for it in large, noisy flocks on a variety of habitats.

Yn gwibio o gwmpas y tŷ yn yr haf, mae'r copyn heglog, brown yn gyfarwydd i lawer ohonom. Mae’n ffynhonnell fwyd werthfawr i lawer o adar.