Ziggy hesitates at the offer and then moves in. "Gently."

Atreus will instantly realize the reason for the request when they hug. Ziggy's bones are much thinner than a humans. Though they are relatively strong, they feel fragile beneath the skin. He's also oddly cool to the touch due to his lower body temperature. However, the hug is emotionally warm, his long arms wrapping around the boy. He doesn't usually hug strangers and hasn't been around too many children but he has distinct memories of adoring hugs from his parents when he was a child. Those memories are a source of the warmth in the embrace.