I have posted about my toddler a lot. I know.
http://boards.hellobee.com/topic/high-energy-spirited-toddlers
http://boards.hellobee.com/topic/hitting-stage-length
http://boards.hellobee.com/topic/toddler-hitting-newborn-advice-needed

Anyway.... I felt like things slowly got better over 2018, and then I spent 2 weeks home with him and heck no they're not better.

My main concern is he seems to feel no guilt. He knows what he did is wrong, he tries to run and hide if he knows consequences are coming, he cries in timeout, but it's not out of guilt - it's out of "hey let me out". He doesn't like punishment but it hasn't changed his behavior at all. I don't *think* he's too young to control ANY of his actions.

He honestly seems to enjoy, or have an least no compunction with, hurting others. I can't identify any triggers. Examples:
- Jumping on a trampoline with friend, then hitting him in the head with a baseball bat
- Digging in the xeriscaped rocks with a large shovel, then dumping the rocks on his baby sister crawling nearby and hitting her on the head with the shovel
- DH asking for his cup, LO gives it to him and then turns around and pushes his baby sister over.

None of these recent situations involve a conflict that got out of hand. It was random violence.

Is this abnormal or normal? What has helped you deal with this as a parent? Who do I go to for help? A child psychologist? I plan to talk to the dr at his well-check next month.

BTW he is babysat for 40 hours a week by my in-laws and my FIL is a softie but I think my MIL is firm with my toddler.