Image 1: Adder
Caution. The only venomous snake in Sweden. Not life-threatening to adults, but certainly hazardous to health. A bite can cause a variety of symptoms such as nausea, vomiting, dizziness, circulatory problems, etc. You should definitely see a doctor. For allergy sufferers, children, and even pets, the bite can even be life-threatening! Please do not underestimate this snake and be aware of your surroundings, especially in sunny and warm weather.
Image 2: Slowworm
This is not a snake but a special type of lizard. Completely harmless, so don't be afraid. However, be careful, as these small lizards are easy to overlook and can easily be stepped on. They are very sluggish and slow, especially in cooler weather.