The present invention provides an improved design for an animal collar with an integrated electronic device where the contact surfacepoints of the electronic device can be positioned in a way that is physically comfortable for the animal that wears the collar. The cutter head body has a first end, an opposite second end and an outer periphery extending between the first and second ends in a longitudinal direction. The vent structure includes a housing, a first port formed in the housing and connected to the conduit, and a second port formed in the housing and connected to atmosphere.