Mae'r siarc main yma’n cael ei enw o'r pigau o flaen ei asgell ddorsal. Gall ddefnyddio'r pigau yma i amddiffyn ei hun drwy gyrlio mewn bwa a tharo ysglyfaethwr.

Our only venomous snake, the shy adder can be spotted basking in the sunshine in woodland glades and on heathlands.

This common hoverfly can be recognised by the dark markings behind its head, which often resemble the Batman logo.

This elegant wading bird is a rare visitor to the UK, though occasionally one or two of pairs will nest here.

This glossy wading bird is a scarce visitor to the UK, though records have become more common in recent decades.

The hen harrier has been severely persecuted for taking game species and has suffered massive declines in numbers as a result. Thankfully, conservation projects are underway to reduce conflict…