They can certainly throw tantrums at this age, Matthew will be 8 months next week and his first tantrum came through when he was approximately 5 months of age this only happened a couple of times then stopped then tantrums started ll over again last week but this time far worse, he`ll just throw himself and start kicking and crying and nothing will soothe him, it makes it difficult to hold him if he actually has a tantrum in your arms, having 10kgs throwing himself everywhere is very hard to keep under control. I always try to calm him down by talking calmly and if he`s in my arms holding him securely.