Answer:
The mass of Benadryl that should be given to the dog is 58.6 mg
Explanation:
First, let´s convert the mass of the dog to pounds:
1 pound = 0.454 kg. Then:
26.6 kg * (1 pound / 0.454 kg) = 58.6 pounds
Since the recommended dosage is 1 mg per pound, the mass of Benadryl that should be given to the dog is (58.6 pounds * (1 mg / 1 pound)) 58.6 mg.