Many tiny hair-like cilia protrude from the olfactory receptor cell's dendrite into the mucus covering the surface of the olfactory epithelium. The surface of these cilia is covered with olfactory receptors, a type of G protein-coupled receptor.
Respiration -10 to 30. The normal respiratory rate for dogs is 16 to 20 breaths per minute. The normal heartrate is 70 to 160 bpm. Large dogs tend to have slower heart rates so your dog should be in the 70 to 120 bpm range. This varies according to the cardiovascular fitness of the dog, too.
Normal values for adults of different species Species Rectal temperature in oC Pulse rate (beats per minute) Respiration (breadths per minute) Dog 37.8â39.2 60â180 10â30 Cat 38 â39.2 110â180 20â30 Cow 38.0â39.0 60â70 25â30 Horse 37.5â38.5 23â70 12 Sheep 38.5â39.5 60â120 20â25 Pig 38.5â39.5 58â86 30â40