Cute!! Well, not really, but it's still just about big enough to play on the swings with you.
Unlike his rather more terrifying parents, who might have rather impolitely eaten you for dinner, this little guy didn't have the strength in its jaws to munch on such large things, so instead would have subsided principally on small, bite sized reptiles. He (they don't actually know the sex, but hey, lets call him a he) was probably around 2 or 3 when he died, which is about 7 or 8 in human years.
Mummy and Daddy probably didn't travel with him and were probably off hunting on their own. I wonder whether they ever found out that he went missing in an river. He was quickly buried (by a fine grained silty sediment) after all.
Journal of Vertebrate Paleontology 31(3):1–21, May 2011