Gorilla Cub at Basel Zoo Killed by Its Father

During the first few days, the baby gorilla’s mother, Joas (37), reportedly displayed typical maternal behavior. On Tuesday afternoon, Yeba showed interest in the newborn gorilla and took the young female into her arms.

However, Yeba no longer allowed Joas to get near the cub, which led to scuffles between the two adult animals, the report continues. During one such scuffle, the cub was killed by an accidental bite to the chest inflicted by Yeba.

Joas continues to carry the dead infant on his back, according to the zoo. This behavior is common among gorillas, and the zoo does not interfere with it. The incident highlights the high complexity of social structures and relationships within gorilla groups.

According to the press release, this was the fifth offspring for the mother, Joas, and the first for the father, Yeba.

Mobali was euthanized on Tuesday

Just last Tuesday, the Basel Zoo announced that Mobali, an 11-year-old male, had to be euthanized. The reason was bite wounds to his genital area, which Yeba had also inflicted on him.

The killing of young gorillas—known as infanticide—is a behavior that has been observed and scientifically documented in gorillas, the zoo adds. It is known to occur primarily among gorillas living in harem structures. The causes could be varied.

According to the statement, the zoo is monitoring the dynamics within the group and consulting with experts. Particular attention is being paid to future developments, especially in light of the expected birth of another cub.

According to the zoo, the group now consists of the silverback Yeba and the females Joas, Makala, and Qaziba.