Flexi cow

In the enthousiasm of the flexi models and with my love for cows i've designed this version.

I've added two versions, one with only the contours of the cow with the flexi-hinges and one with the famous cow flecks where you have to change material during the print.

(Note: the outer contours i've copied from https://dwgmodels.com/207-cows.html all other operations of the model (extrusion, flecks, hinges) i've created myself)