Dust - analysis, Acaridae, Cysteine Endopeptidases, Temperature, Allergens - analysis, Antigens, Dermatophagoides - analysis, Food Contamination - analysis, Dermatitis, Atopic - veterinary, Animals, Arthropod Proteins, Animal Feed - analysis, Dermatitis, Atopic - etiology, Dog Diseases - etiology, Dogs, Humidity, Pyroglyphidae