Hello.
I know about snakes so I'll comment on the pictures a bit:
-that dried one isn't a snake but a slowworm, which is a legless lizard. It differs from snakes by having eyelids on its eyes (snakes don't), to stick out its tongue it has to open its mouth (snakes have a hole in front), scales are different too, more like smooth skin.
-this other one is neither horned viper nor asp viper but a non-venomous smooth snake, which belongs to colubrids. Smooth snakes have two rows of dark spots on the back that can merge into a zigzag pattern, but it's not pronounced. It differs from viper and horned viper by being slender with a long evenly tapering tail (vipers and horned vipers are thicker relative to length, their tail narrows sharply and is short, horned vipers have a horn on the head and often reddish tail, back pattern is rhomboid, vipers have thick zigzag on back, head is distinctly thicker than body and triangular). Smooth snakes can be gray or brown.
Hope this helps.