Irish Soft Coated Terrier dogs should eat dog food as their main daily food. Dogs under 3 months old should be fed puppy food, dogs over 3 months old should be fed full-grade food, and an appropriate amount of meat should be fed every week. Use vegetarian food with vegetarian food, and feed it to dogs in small amounts and multiple times. Regularly supplement the Irish Soft-Coated Terrier with calcium, vitamins, and nutritional creams to help the dog grow healthily.