There is a sticky in the library section here (I think it's the library section, or maybe the sick and injured?) about anesthesia protocol. I will see if I can find it for you. 3 lbs is tiny, but that is an ok size to get spayed.
__________________  The T.U.B. Pack! Toto, Uni, & Bindi
RIP Lord Scrappington Montgomery McLimpybottom aka El Lenguo the Handicapped Ninja 10-12-12 
|