
Punch, a young Japanese macaque born in July last year at Ichikawa Zoo, has attracted international attention after he was abandoned by his mother and isolated from the group of other monkeys, who showed aggressive behavior towards him.
According to primatologist Alison Behi from the Australian National University, newborn abandonment is not common in Japanese macaques, but can occur in special circumstances.
Factors such as the mother's age, health and inexperience can play a role. In Punch's case, his mother was a first-time mother and the cub was born during a heat wave, an additional stress factor that may have influenced the mother's decision not to raise the baby.
After he was abandoned, zookeepers tried to prop Punch up with various towels, until they finally gave him a stuffed monkey toy to give him a sense of security.
As keeper Kosuke Shikano explains, newborn macaques immediately cling to their mother's body for muscle strength and security; the lack of this made the stuffed toy a "bonding figure" for the little one, especially at around six months old.
Videos of Punch being pushed or pulled by larger monkeys have sparked emotional reactions on social media. Behi explains that this behavior is not bullying, but part of normal social interaction among macaques, which live in strict matrilineal hierarchies. Even if his mother had not abandoned him, Punch would likely have been subjected to similar aggression from the larger monkeys in the group.