Taste of the Wild Pet Food offers the High Prairie formulation in both a regular formula and a puppy formula for dogs under the age of 18 months. The adult formula has a total fiber content of 4% and the puppy formula has a total fiber content of 5%, according to the company. The food includes probiotics, prebiotics and salmon oil, Taste of the Wild says. The kibble in the puppy formula is smaller for puppies' smaller mouths.