[Educational Material: 
Quote cited references]
 
| CLICK to enlarge   Fig. 1.  Pottery image of a dog-like animal with a
  crown from Tres Zapotes,
  Veracruz, dated  ca. 100-200 AD. 
  Such  “toys” were able to be
  pulled, but they are believed to be funeral  offerings because they shown no ear (Pettit & Pettit
  1978). |