Why do people treat me like I am insane because I care for animals?

Once I tried to remove a worm I thought was drowning from a mud puddle. My aunt saw me and has never acted the same toward me since. She seems a little afraid. The other day I saw a spider on the sidewalk and tried to shoo it over into the grass so it wouldn't get run over or stepped on. People passing looked at me like I was crazy. Am I crazy?