Memory (3) test (2) Lists (2) stress (1) traitement (1) association (1) animal (1) verre (1) expérience scientifique (1) effet (1) chien (1) méthode (1) Trèves (1) Control (1) Death (1) Scores (1) Indexes (1) Claws (1) Labor (1) Will (1) Tallies (1) Tail (1) Starvation (1) Social groups (1) Shades and shadows (1) Sadness (1) Psychology (1) Paper (1) Pain (1) Indexes (1)