The season's hottest Christmas toy is a robotic hamster that could cause cancer in children, according to a consumer website. The rodent in question, named "Mr. Squiggles," belongs to the Zhu Zhu Pets brand and allegedly contains a high level of the chemical antimony, which the GoodGuide reports "may be linked to cancer, lung, and heart problems."

The consumer group tested the toy — which has already been dubbed this year's Tickle Me Elmo — and measured antimony at 93 parts per million in the hamster's fur and at 106 parts per million in its nose, both exceeding the permissible level of 60 parts per million, according to GoodGuide co-founder Dara O'Rourke.

The toy's manufacturer, Cepia LLC, told CNN that Mr. Squiggles is safe for kids. "All our products are subjected to several levels of rigorous safety testing conducted by our own internal teams, as well as the world's leading independent quality assurance testing organization, and also by independent labs engaged by our retail partners," said CEO Russ Hornsby in a written statement. "The results of every test prove that our products are in compliance with all government and industry safety standards."