DS (4.5) has similar moments although it is our dog that gets the rough behaviour (other times he is delightful with her). Fortunately for him she is very tolerant! He also got fearful about being alone in rooms eg bathroom etc about 6 months ago although seems to be coming out of it now. Sometimes it does seem to sugar related (thank you Nanna) but I think it also happens more on days where he is under or over stimulated. When the balance is right he is so easy to be with. If he is getting a bit crazy snuggling with a book for 10mins often settles him right down. Failing that running him till he drops often works too
. Hope it gets easier for you soon
