Appearance
Webbed is a horn mutation causing the horns to grow or merge into itself or eachother, most notable on spined horns.

Various webbed horns
From left to right: spined curved, spined coiled, smooth straight, smooth straight
Webbed is a horn mutation causing the horns to grow or merge into itself or eachother, most notable on spined horns.

Various webbed horns
From left to right: spined curved, spined coiled, smooth straight, smooth straight