Grass snake (natrix natrix) close,up of head of young snake, oxfordshire, uk

hatchling snakes horizontals animals horizontal scaly reptilia wildlife grass cold predator reptiles natrix serpent english vertebrate carnivore reptile ectotherms british predatory developed country england carnivora uk squamata cold blooded carnivores marsh serpents ectothermic europe uk vertebrates britain snake blooded scaled serpentes limbless head carnivorous nature united kingdom close up colubridae juvenile young zoology oxfordshire ophidia developed countries water european ectotherm reptile snake animal grass fauna animal