When Sri Krishna was a child in Gokula and, later, Vrindavana, several attempts were made, on behalf of Mathura’s King Kansa, to kill him. Putana, Shakatasura, Trinavarta, Bakasura, Aghasura ...
One final thing to be noted is that Sri Krishna defeats all the attempts to kill him. Even though he is just a small child and the attackers are huge and powerful demons, they are unable to kill him.