Biology of Dogs: From Gonads Through Guts To Ganglia- Tim Lewis PhD-Biology of Dogs takes you on a series of tours through all the major biological systems – reproductive, nervous, musculoskeletal, digestive and more. Tim leads these tours in a fun and irreverent manner, offering insights that will enhance your dog-human relationships so much that you will abandon all of your human friends to spend more time with your dog! And for those of you who slept through your biology class in school, you will learn a lot of useful information about human biology as well.