Answer to Question 1
Erysipelas, Leptospirosis, Mycoplasma pneumonia, Tetanus, Pseudorabies.
Answer to Question 2
Companion pigs should not be treated like commercial pigs. The bond between owner and pig is just as strong as that between owner and dog or cat. Pigs are very dominant and try to seek dominance over their owner.
Answer to Question 3
The feet need to be trimmed routinely. Needle teeth need to be trimmed if not removed. Males should be castrated. Routine vaccinations should be given.