All trophies known by me:

alligator skin train/study negate offhand penalty: +5%
bear skin train/study mangle: +10%
bear tooth train/study bestial frenzy: +10%
bird feathers train/study find weakness: +5%
buffalo hide train/study impale: +5%
bull horns train/study alertness: +7%
chimera's tail train/study parry: +6%
claw of the sabretooth train/study parry: +4%
enormous fishbone train/study hunting: +10%
hardened mud train/study stunned maneuvers: +10%
head of feline train/study stunned maneuvers: +10%
head of the sloth train/study camping: +5%
hide of a giraffe train/study alertness: +5%
hide of a zebra train/study alertness: +4%
hide of the feline train/study discipline: +6%
hyena's head train/study impale: +5%
leopard hide train/study mangle: +10%
mane of the lion train/study riposte: +10%
monkey skull train/study stun: +6%
moose horns train/study alertness: +6%
raccoon fur train/study bestial frenzy: +10%
reindeer horns train/study hunting: +10%
rhinoceros horn train/study tumbling attack: +5%
scales of a drake train/study find weakness: +5%
scales of a seamonster train/study discipline: +7%
shark tooth train/study discipline: +4%
snake scales train/study shield bash: +10%
stinger of scorpion train/study alertness: +8%
tail of a seamonster train/study riposte: +10%
tail of a skunk train/study negate offhand penalty: +3%
tentacle of squid allows saddle on mount
tiger hide train/study negate offhand penalty: +7%
tooth of the sabretooth train/study mastery of mounted combat: +5%
tortoise shell train/study bestial frenzy: +10%
tusk of the elephant train/study combat riding: +5%
unicorn horn train/study stun: +4%
whale oil train/study riposte: +10%
wings of a griffon train/study rampage: +5%
wolf hide train/study discipline: +3%