I think it happened around the time I was 4. Me and few classmates in my preschool class were playing in the bushes on the school playground. Suddenly, we found a dead bird; I think it was a sparrow. So we used some plastic shovels to dig a hole, put the bird in there, and buried the bird. Then one of the boys laid out a cross in small stones on top, and said: "now the bird has the resting place it deserves". All of us in the group agreed. After sitting there for a few more minutes, we went back to our game.
The first time I felt empathy for a person was much later, around the age of 7. There was an ambulance stopped in front of my condo building. Red lights were flashing all over the place, but luckily, they didn't give me sensory issues. I saw someone being carried into the ambulance, although at my height at the time, I didn't get a good look at the person. Later that day, I kept asking my parents about who the person was (after all, he/she lived in the same building), and if he/she was going be OK.