Here's what's going on... here's a cat case study (if you don't like cats, sorry this might bore you) :
My cat did not have a tooth infection; I thought this was the case as she was drooling from the mouth and would not let me open it up to see what was the nature of her illness was. Actually, to do this you definitely need two people to hold her feet and body while opening the mouth. The veternarian, upon opening her mouth, saw that her right canines (upper and lower) were hurting her. Here is what's happening: her lower right canine is broken, and her upper right canine is stabbing into her lower right gum. The solution, remove both canine teeth as soon as possible.
Upon palpation, the vet noticed that her thyroid gland was enlarged which was a red flag to him. The possibility of having an uncontrolled, overactive thyroid before the dental work could potential lead to serious heart problems. His solution was to gather blood work, which was done today, and to see how high the thyroid levels actually are. He called me a few hours ago - her thyroid levels were too high to measure. So, I was able to pick up thyroid medication today which is to be given to her every day. See, the problem the vet faces is: how long will it take before her thyroid is under control when there isn't a number to assess how hyperactive her thyroid actually is. Ideally, he'd like to put her on the thyroid medication 4 weeks to get is well under control. However, with the oral problems he needs to compromise the time limit as postponing a major extraction would also lead to problems. So... the solution is to put her on it for a couple of weeks, do blood work to see where she's at, and then if all goes well to go ahead with the dental extraction.
Hope this might interest you all

Not looking for medical advice, but I just wanted to present you all with a current problem my lil girl is currently facing to show you all an example of an animal case study. And for those who are very interested in animals, here is a forum I have recently found:
http://www.pets.ca/forum/index.php
Enjoy
