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.
Costs of Hip Dysplasia Surgery. The average costs of a canine hip dysplasia surgery may be around $1,500. However, there may be price variations which will be determined by: 1  The complexity of the surgery, whether one or both of the components of the hip will be replaced. The complexity of the surgery, whether one or both of the components of the hip will be replaced. 2  The materials used for the hip replacement; titanium is the most expensive option, plastic is much cheaper. 3  The age of the dog; in senior dogs the surgery may be more risky and the vet may charge extra.