The Amazing Monstrous Fiendish Spider, for his first trick will roll a 20 on his to hit roll against Endur. He failed to confirm the critical, and Endur passed the first poison saving throw he will have to make (Endur will have to make another poison save in 10 rounds).
The Spider did 13 points of damage (d8 +3 +smite good 6) - some amount of DR.
Endur swung three times in a full attack. The first two attacks hit easily and did 42 points of damage (bypassing the Spider's DR). The third attack also hit, but only because the spider was in negative hit points by then. The third attack knocked the spider past -10.
The Jump Skill in 3.5 is different from 3.0. The white wolf rolled really high on his jump check, but it was not quite enough to bite Dariel. If the wolf had been wearing a chain shirt instead of plate barding, Dariel might have been bitten.