You wil be fined if caught driving too fast. The speed limits are often set in view of animal crossing on highways and larger roads outised urban areas. In the non urban areas, it is very common for mammals to make cross over. Mostly there will be road signs warning for moose and other larger mammals. However, there are no specific signs for smaller animals, equally crossing the roads.
Accidents occur frequently due to animals crossing the main roads.
In many places in Sweden there are specific tracks and trails for bikers, If there are none, be sure to keep to the right, use your hands to mark the turns and wear a helmet.