Note: Garlic supports immune system and is useful in fighting bacterial, viral, and fungal infections. May deter fleas, ticks, and internal parasites. Gastrointestinal upset and flatulence can occur in some sensitive dogs; do not use large amounts-more than 1/4 clove daily in small dogs or 1 to 2 cloves in large dogs-without veterinary supervision. I was prescribed dried shiitake mushrooms for one of my dogs by Margarat Nee of The Art of Dog, K9 wellness support. Add a handful to each batch of bone broth at the beginning of cooking. Strain out with bones when finished, intended to assist body’s immune system.