Place chicken breasts & shrimps in a large saucepan; add water until chicken is covered. Bring to a boil over high, and once water boils, reduce heat to medium.
Simmer until chicken is cooked through, 10 to 12 minutes.
Remove from heat, and let chicken cool in broth in saucepan for 30 minutes.
Transfer chicken & shrimps to a cutting board, reserving broth.
Chop chicken into small pieces and mince the shrimps
Combine chicken, oats, shredded vegetables, peas, and parsley in a large bowl.
Add reserved chicken broth, 1/2 cup at a time, until desired consistency is reached based on your dog’s palate.