Littlefoot: friendliness, smartness, fairness, bravery and good leader qualities( mostly).
Cera: strenght and bravery.
Ducky: friendliness, happiness, cheerfulness cuteness and mediating disputes.
Petrie: funniness and his way of speech.
Spike: ability to smell food, strenght, friendliness, calmness and loyality.
Chomper: friendliness, bravery and funniness.
Ruby: interligence and friendliness.