The Roboreptile has infrared and sound sensors, and is able to autonomously explore its environment while avoiding obstacles.
[1] Roboreptile was released in China on the 28 April 2006 and to the rest of the world later that year.
It is superficially similar to a theropod or a prosauropod dinosaur but being quadrupedal it's better equated to a silesaurid or a monitor lizard.
The Robotyrannus is a variation of the Roboreptile with some cosmetic differences: horns on its head and a dorsal fin.
It is currently being sold in the UK, Canada and the United States (although in the US it is generically called Roboreptile, despite being the Robotyrannus design).