IoT Device Development for Livestock Health

I'm looking to have an IoT device developed for monitoring the health of my livestock, specifically cows and sheep. The device will need to track temperature, heart rate, and activity levels.

Key Requirements:
- Design and develop an IoT device capable of health monitoring for livestock
- Incorporate sensors to track temperature, heart rate, and activity levels
- Ensure the device is durable and can withstand outdoor conditions
- Provide a user-friendly interface for easy data interpretation

Ideal Skills:
- Proven experience in IoT device development
- Knowledge of animal health monitoring systems
- Excellent skills in hardware design and software integration
- Ability to create user-friendly interfaces for complex data sets

Your proposal should include examples of previous work, particularly any experience with IoT devices for animal health monitoring.