Click this link, print it out and get familiar with it. Hopefully you won't need it tonight.
http://www.yorkietalk.com/forums/yor...uture-use.html
Can you take you dog's temperature? Any thermometer, dipped in lube (vaseline, cooking oil, k-y Jelly). Insert thermometer about 1 inch up his butt, straight in, angled slightly toward the spine, slowly. Leave in about a minute. 100-102.5 is normal.
What color are his gums?