Helping behavior is seen in humans from about two years old when a toddler can understand subtle emotional cues.
hˈɛlpɪŋ bᵻhˈeɪvjɚɹ ɪz sˈiːn ɪn hjˈuːmənz fɹʌm ɐbˌaʊt tˈuː jˈɪɹz ˈoʊld wɛn ɐ tˈɑːdlɚ kæn ˌʌndɚstˈænd sˈʌɾəl ɪmˈoʊʃənəl kjˈuːz.