D-Rex

The level of interactivity is pretty impressive. About the size of a small puppy, it behaves semi-autonomously, though
it'll follow patterns you pick w/ the remote like guarding your room
(if it detects a light change, it goes apeshit) and (cutely) responds
to petting, calling and the like. $150.

D-Rex, an interactive "pet" dinosaur for boys that boasts life-like
movements, obeys commands, displays affection and protects its owner. It features "biomorphic robotics," a sub-discipline of robotics that
focuses on emulating the mechanics, sensor systems and methodologies
used by animals.

D-Rex has several features that bring him to life - he moves his eyes,
wags his tail, responds to care and feeding, comes when called, and
like any good pet, protects his owner and his prize possessions.

D-Rex combines robotics, proprietary software and reptilian skin to
create a life-like appearance and behavior. He walks around, chomps his
jaw, bares his teeth and roars more than 100 different ways to let you
know what he wants. D-Rex might demand food or want to play a game, and
he'll hear your voice and respond to your touch.

Article Link (Gizmodo)