Other mistake: As the 2 buffaloes are walking out of the scene at the top of the hill Charlie says to Clyde that 'it's either gonna be her or me' but as both buffaloes' bellies are exposed in the same shot, it's clear that both buffaloes are males, or bulls.
Horse of Another Color - S2-E3
Other mistake: There is no way (plate, symbol) to differentiate the uniform of Lieutenant Rafael Santos from that of a captain, such as Monasterio.