I really don't think there's anything I can do about this but just in case...
Yesterday I had a friend and her dd over at my house. Ds knows them and often plays with the dd but yesterday he kept pulling at her or pushing her over. He's never done this before but yesterday he just wouldn't stop. I felt really bad as the dd kept crying . My friend wasn't worried about it and said that he's probably either just trying to be friendly or its because they're in his house and he's been a bit territorial. Tbh we do tend to go out more than having people over so could this be it? Ds recently started nursery as well and I'm wondering if he's picked it up from there?
I do think that because he's only 14mo he really can't understand that he's doing wrong even though I tell him 'no'. Is there anything I can do to stop it, will he get worse?