Cats rely less on their sense of smell for huntings than dogs do, which is apparent from the smaller repertoire of olfactory receptor genes in the feline genome. (massgenomics.org)
There are more than 350 types of olfactory receptors in the nose, tuned to different scents. (newscientist.com)
«To fully understand the loss of olfactory receptor genes in the ground tit, further comparisons need to be made with genomes of closely related species inhabiting lower altitudes.» (sciencedaily.com)