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.
The heart rate is an important guide as to whether the heart is struggling or not. A cat's normal heart rate is approximately 120-140 beats per minute. A stressed cat will have a faster heart rate, meaning that the vet's measurement could be high. While a cat is at the vet, most vets consider up to around 180 beats per minute to be normal. Out of the vet's office, 180 beats is very concerning. A cat's heart may be beating fast to maintain circulation if its heart is failing.