The squeamish should not click on your link, and certainly should not zoom in on the picture. The child appears to be holding the human baby equivalent of a "lucky rabbit's foot" on a chain, though in this case it appears to be a bright red "forepaw".
Or perhaps it's just an early "pacifier".
A ‘forepaw’ alright. A human one.
BTW, another ‘big jaw’ is Mueller.