10-month-old ds has recently started being really whingey and throwing minor tantrums over the smallest things (eg giving him a spoon to hold/taking a spoon away etc). He just seems to have a really short fuse. He's never been the cheeriest of babies - he's always been quite serious and thoughtful. But now I'm wondering if he's just naturally quite a grumpy baby or if this could be a developmental phase he's going through. He has 6 teeth already and I think has been doing a bit of teething, but this "phase" has been going on for over a week now. Has anybody else experienced this?