Reusable ear tag

A biometric monitoring device for an ear of an animal comprises:

• a male portion configured to be disposed on a first side of the ear comprising:
• a base having an upper surface configured to be disposed towards the first side of the ear, wherein the upper surface includes a plurality of openings;
• a spacer configured to be disposed between the first side of the ear and the upper surface of the base, wherein only a portion of the spacer contacts the first side of the ear, wherein the portion of the spacer is substantially flat;
• and
• at least one protrusion disposed upon the upper surface of the base extending through the spacer, wherein an upper portion is configured to be disposed through the ear from the first side of the ear to a second side of the ear;
• and
• a female portion configured to be disposed on a second side of the ear comprising:
• a housing having a lower surface configured to be disposed towards a second side of the ear;
• an internal opening in the lower surface of the housing, wherein the internal opening is configured to receive the upper portion of the protrusion;
• a retention portion disposed within the housing, wherein the retention portion is configured to repeatedly retain the upper portion of the protrusion when the first protrusion is disposed through the internal opening, wherein the male portion is secured relatively to the female portion when the retention portion retains the upper portion of the protrusion, wherein the retention portion comprises a release configured to repeatedly release the upper portion of the protrusion from the retention portion;
• a plurality of electronic components disposed within the housing, including a battery, a processor, and a temperature sensor;
• and
• a thermally conductive ring disposed upon on the lower surface of the housing, wherein the ring is configured to be disposed against the second side of the ear and wherein the thermally conductive ring is thermally coupled to the temperature sensor.