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.
Prices for this type of dog surgery depends on the age and weight of the animal. Typical costs are as follows: 1  Male Neuter or Female Spay 0-20 lbs. 2  $149. 3  Male Neuter or Female Spay 21-40 lbs.4  $154. 5  Male Neuter or Female Spay 41-60 lbs.he cost for dog cataracts surgery ranges from $1,500 up to $3,000. The cost typically includes several days stay at the veterinary hospital, but in some cases it may not. Hip Dysplasia Surgery. Hip dysplasia is a common degenerative joint disease mostly seen in dogs.