What was JJ Thomson Atomic theory? Joseph John Thomson discovered the electron in 1897. In 1904,  Thomson suggested a model of the atom as a sphere of positive  matter in which these electrons are positioned â¦by electrostatic  forces.
Cost of Perineal Hernia in Dogs. Stool softeners for dogs are usually $15 for 40 soft chews. Consult your veterinarian before trying human stool softeners on your dog. Enemas ($4 for a 4 pack) are another option.
The heartworm treatment for my dog cost me $450. There was bloodwork done first to make sure she was healthy enough and that cost around $85. My dog was diagnosed late stage two. She had two injections and stayed overnight at the vet.