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.
1 Common surgeries such as a umbilical cord hernia can cost as little as $200 if the dog is still in its puppy stage. 2  According to the site TerrificTests.com, the price for hernia surgery for dogs can cost anywhere from $1,100 to $2,000. On average, this type of surgery can cost anywhere from $700 to $2,000. 2  The size of the dog, as well as the severity of the condition can greatly influence the price tag.