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.
Cost of Sebaceous Cyst Removal in Dogs The average cost of removing a sebaceous cyst from a dog can vary and may range from $75 to $250. If your dog has multiple cysts or if the cyst is located in a challenging area, such as the face, the price may increase.