Beef Testicles 
They are a natural dog treat that are high in protein and low in fat, and can be a great source of nutrients for dogs. 
 
Nutrients 
Beef testicles contain vitamins and minerals that support a dog’s overall health, including B vitamins, phosphorus, selenium and zinc. 
Texture 
Beef testicles are air dried to create a crunchy treat that’s softer than other dog treats like horns or hooves. 
Uses 
Beef testicles can be used as a training treat or reward and can also help with chewing, teething, boredom and dental health. 
Keep in a resealable bag at room temperature, out of sunlight, to keep them fresh. They can be smelly but some say the goodness of the treat makes up for it.