POD

POD = Per One Damage.
In the table you can find that a small snake gives 40 pod. So for every point of damage you inflict you get 40 experience points. If you would damage the snake for 15 damage that means you would get 15 * 40 (pod) 600 exp points.

Per One Damage List (ordened by monster name)

Monster	POD
Aet'Thol	60
Arrowhead	80
Asp	45
Badger	30
Bandit	60
Bandit Leader	60
Banker	25
Black Bear	50
Bloom	25
Braced Door	15
Brown Bear	55
Bunny	1
Burly Bartender	35
Butterfly	60
Captain Wylsen	65
Caterpillar	50
Chair	45
Chest	1
Cinder Beast	60
Clay Golem	50
Colossal Ant	50
Crystal Giant	20
Dark Gnome	20
Deer	2
Demonic Soldier	55
Door	2
Drunken Brawler	30
Dryad	30
Elite Sentry Spider	50
Elshira	60
Ettin	70
Gardener	70
Ghast	30
Ghost	30
Ghoul	20
Giant Centipede	36
Giant Crocodile	42
Giant Frog	57
Giant Leech	27

Monster	POD
Giant Mosquito Swarm	60
Giant Rat	10
Giant Snapper Turtle	62
Giant Spider	45
Gnoll Archer	75
Gnoll Captain	65
Gnoll Elite	50
Gnoll Guard	65
Gnoll Warrior	70
Goblin	3
Granite Beast	50
Griffin	40
Guard Spider	45
Guardian of Aet’Thol	10
Guild Bartender	45
Hedge minion	60
Horned Goat	25
Hydra Hatchling	56
Hydra Head	62
Hyena	25
Injured Eagle	21
Large Snake	45
Large Snake Zombie	25
Librairian	25
Lifeless Soldier	0
Master Thief	65
Master Trainer	45
Mayor Tvarti	45
Modern Art Sculpture	70
Mountain Goat	25
Mountain Lion	75
Mourner	-1
Mud Monster	62
Mummy	60
Mutant Beetle	60
Mutant Rat	20
Ogre	52
Orc	30
Owl	25