The Besanna scanner works when making contact with skin.
Place and hold the Besanna scanner sensors to your pet where you can find the least amount of fur or hair; typically under the belly. You may need to nuzzle the probes through your pet's fur. Because moisture increases the skin conductance between the scanner and your pet, applying a pet-safe lubricating gel* to the sensor probes may improve connectivity.
*Recommended lubricating gels such as ultrasound gel, OB lube for animals, veterinary lubricant, or water-based personal lube.