TINY T-REXES = BIG TROUBLE!!! Adventures (and disasters) abound in this fun, fast paced chapter book about the perils of taking care of tiny dinosaurs. Danny and Lin are determined to be the best Microsaur sitters ever! Sure, things got a little out of control with the tiny-raptors and the Professor's lab might have gotten a bit ...destroyed. BUT it's all going to be absolutely fine. After all, they have a plan! Unfortunately, even the best plans can fall through when faced with the terror of tiny T-rex twins, and with the Professor on his way home, Danny and Lin find themselves racing against the clock to fix everything before he kicks them out of the Microterium forever!