All tequila is mezcal, but not all mezcal is tequila.  The agave plant is a desert succulent not a cacti.  It takes about eight years to mature for harvest. The blue agave is a one-time use plant. Once they’re finally ready to harvest, the agave plants have their piñas – or hearts – called that because they end up looking like pineapples – ripped out. Those are the parts that will be steamed, crushed, and fermented into tequila. Those piñas (means pineapple) are incredibly heavy. They can weigh anywhere from 80 to a few hundred pounds.   They look like pineapples or pinecones and are about as big as a pumpkin to full person size. 

Tequila, FYI, will have absolutely no worms in it.  That’s mezcal, not tequila. So basically don’t drink tequila if there’s a worm in it. If the producer got that wrong, who knows what else is wrong in the bottle.