A town council has issued a public safety warning to walkers and dog owners after a pet was bitten by a venomous snake.

Downham Market Town Council has told locals to be aware of adders hiding in the long grass in the Clackclose Road area.

The creatures - which are Norfolk's only venomous snake - are starting to emerge from their winter hibernation, as temperatures start to rise.

READ MORE: Adder warning in Norfolk as snakes come out of hibernation

Adders are active in spring and early summer, when they can be seen basking and foraging.

Most adders can be identified by a vibrant zig-zag pattern along their bodyMost adders can be identified by a vibrant zig-zag pattern along their body (Image: Newsquest)

In a post on social media post, the council warned: "We have been advised that a dog was bitten by what is believed to be an adder in the Clackclose area in recent days."

"Please be mindful that when in this area, that due to the wet weather, the grass is awaiting a cut by the Borough Council."

READ MORE: Venomous snake attack leaves eight-year-old 'traumatised'

Most adders can be identified by a vibrant zig-zag pattern along their body.

Often spotted in heathlands and sand dunes along the coast, they can also be found in woodlands.

If bitten, immediate medical attention should be sought as symptoms can include dizziness, vomiting and swelling.