close-up of a dog's open mouth with white teeth

39aph39 above anatomy animal beak below biology brown brush buccal canine care cavity cheek cheeks close-up closeup cute dental dentist dentistry denture dentures detail doctor dog face farm food glands glimpse gum gums hair hairs hairy hard head health into jaw lip lips mammal mouth nasal nature nose open oral organ palate pink red roof s skin small smile taste teeth tongue tonsils tooth tract vet veterinarian veterinary vocal white young