Sinornithoides is a Troodon from early Cretaceous China. It was 3.3 feet long and around 10 lbs. It was also 1.5 feet tall. Being a Troodon, it has very large eyes and was very fast. Its large toe claw was 1 inch long, and was probably used in defense against Sinornithosaurus, who it might have preyed on. It also lived in packs and if a large enough pack gathered, it could take down a large herbivore instead of just eating insects, lizards, and mammals. Yes, they where smarter, bigger, and preyed on our ancestors.