Protector for the udder of a cow

A combination of an udder protector composed of a cellular foamed synthetic resin elastic material, which has a side face of a relatively thick plate-like shape and a doughnut-like annular plane shape, one part of said annular protector being cut and separated in the radial direction and both the cut ends being pressed against each other so that they can be forcibly opened and separated from each other and the cow ankle can be inserted into the central hole of the annular protector from the side through a clearance formed between the cut ends, said protector having a diameter greater than the hoof of a cow and when applied to a cow adapted to engage the udder and prevent injury thereto by said hoof, with a connecting member comprising two arcuate plates disposed on both surfaces of the protector to cover said cut part of the protector, each arcuate plate including, on the face confronting the other arcuate plate, male and female projections which are inserted into holes formed in both the sides of the protector with the cut and separated part being the boundary and are engaged with female and male projections of the other arcuate plate, respectively.