Maybe more sound than word. I know I keep Surs treats (granola bites), in a mason jar, she gets one every morning. She’ll usually eat half of her breakfast, get antsy for a treat, then after she’ll finish her breakfast and nap time! The MOMENT I touch that mason jar and she hears the treats or me unscrewing the lid, she is at my feet in seconds!!! It’s amazing! So may it’s noises more so. She also knows the crinkle of bags. But she knows what bag is what- she knows the sound of treat bag, pellet bag, hay bag, carrot bag...... I swear it’s amazing!