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.
They list that the price for the hernia surgery can fall between $750 to $1,600. Embrace Pet Insurance says the average cost could be about $150 to $400 if it were a minor repair, but if it were a complex situation, plan on spending more than $500.