There really weren’t any sufficiently large draft animals in the pre-Columbian Western Hemisphere, except for llamas and alpacas in South America. Those camelids were impratical in a tropical climate such as Central America, or for that matter, in the Amazon basin.
There is a reason why horses aren’t found in southern Africa before the white man settled there: the tropical, equitorial climate is a killer to horses.
They didn’t use the wheel. It helps human hands as well. They knew about it, but other objectives took priority.