We've started noticing that the triplets are becoming more coordinated as they explore their world. The other day Arthur grabbed a rattle and shook it in front of him for a while. Tonight, Betty decided she had had enough of the dangling bell taunting her, and chose to fight back.
Sounding off with her battle cry, she got in a couple dozen kicks with her right leg, and when we slid her over, she finished it off with a dozen kicks with her left leg. Take that, Mr. Bell!
(Please note the moral support that Arthur gives his sister...he'll get there one day...)