The cow model measures 17 cm at the "withers", and the bull 19 cm.
The next step was to roughly form the basis of the body shape with aluminum foil and to form the head and horns with wire. Forming the horns was especially tricky, because I as someone who is very picky with the horns of aurochs-like cattle I want my horns to become as good as possible. At this stage, I realized that the front of the trunk in the bull was too elevated, creating a bison-like body. I therefore cut off a bit of the wire for the forelegs and added length to those of the hind legs.