I was reading the rules last night and came across something I missed before. For very tiny creatures (i.e. spiders) of size -8 the attack mod is listed as +8. The adjustment makes sense for small creatures...but at the -8 point is a bit troubling. Even with a max strength of 0 and no brawl skill per se, a +8 attack could do some real visible damage to a human without even factoring in poison (in the case of a spider that is). Did I miss something like a max damage adjustment, or is this something that I need to fix on the fly as a GM so that the players don't get taken out by mosquito bites. Any suggestions?

The Ubiquity system introduced creature creation rules after Desolation came out that establish a creature's base damage rating as (Size). So a spider would have a -8L bite with a +8 Modifier, or essentially an attack of (0 + creature's Brawl)L.

Yeah I know it looks screwy. Bottom line is, in most cases the attack rating given for creatures' attacks in the book should already include the Size modifier so you don't need to.