While there are three snake species native to the UK, only one is venomous - the adder.

They are recognisable due to their "distinctive" zig-zag pattern and "striking" red eyes.

The RSPB added: "Its venom is mainly used for subduing its prey and bites to humans are uncommon but do be sure to keep a respectful distance!

"If you accidentally disturb this timid beauty and get bitten, you will need to seek medical treatment."

Native wild animals in the UK

They can grow up to between 60cm to 80cm in length.

Are adders dangerous?

An adder bite can be "painful" and cause inflammation, BBC Countryfile explains.

The wildlife experts added: "But [it] is really only dangerous to the very young, ill or old."

An adder bit can be painful and cause cause various symptoms including swelling, bruising and in sever cases vomiting.An adder bite can be painful and cause various symptoms including swelling, bruising, and in severe cases, vomiting. (Image: Getty Images) Other symptoms of an adder bite can include:

  • Bruising
  • Tingling
  • Nausea
  • Vomiting

Adders are described as being "very shy" and in most cases they will hide when they hear people approaching.

BBC Countryfile said: "They tend to bite only when stepped on, or if panicked at close range."

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How many people have died from adder bites in the UK?

While not typically life-threatening, there have been 55 fatalities attributed to adder bites in the UK since 1722, according to the Surrey Amphibian and Reptile Group.

The most recent death from an adder bite was recorded in June 1975 in Trussachs, Perthshire (Scotland).

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Where you'll find adders in the UK

While Adders usually keep a low profile, they can be found across the UK, even as far north as mainland Scotland, according to the RSPB.

The wildlife charity added: "The best way to spot one is by scouting out south facing areas in early to mid-spring and scanning for a basking snake.

"At this time of year, they’ll soak up as much sun as possible, after emerging from a long winter hibernation."