Authorities have issued a cautionary alert following a surge in adder sightings along the Swansea coastline, particularly in areas like Port Eynon and Rhossili on the Gower Peninsula. South Wales Police are urging the public—especially dog owners—to remain vigilant and to ensure pets are kept on leads at all times when walking in these regions.
Adders, the UK’s sole venomous snake species, have been spotted more frequently in recent days. They are typically active between early spring and October and favour habitats such as sand dunes, heathlands, and woodland edges. According to wildlife experts, these snakes can reach lengths of up to 80 cm and may live as long as 15 years.
While adder venom is usually not dangerous to healthy adults, it can cause pain, swelling, and inflammation. The risk is higher for children, the elderly, and individuals with underlying health conditions. In dogs, bites often occur during the warmer months, particularly from April through July and often later in the day when snakes are more active.
Officials advise checking pets for signs of bites—such as swelling, redness, or two small puncture wounds—if an encounter is suspected. Owners should act quickly to keep the animal calm and immobile and seek veterinary help as soon as possible to prevent the venom from spreading.
Adders are generally shy creatures and avoid human contact. They typically bite only when threatened or accidentally disturbed, such as being stepped on. South Wales Police shared footage of an adder in Gower to raise awareness and remind the public to respect wildlife while enjoying the outdoors.
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