Liver is cut into small pieces for training. It is convenient to take for a walk, for classes at home, training puppies with a dog trainer or to create intellectual games. Liver contains many vitamins (A, C, D) and minerals (potassium, magnesium, copper, iron). Suitable for all breeds of dogs and puppies aged 2.5 months. There are two sizes: mini - for small breeds up to 5 kg. Maxi - for medium and large breeds from 5 kg.