Probably not. Today consumer is usually used for people who buy things.
cattle
tigers, hyenas, foxes, lions and leopards to name just a few
Many consumers are herbivores. For example: a horse eats plants, which are producers, therefore horses are consumers.Examples of consumers that are herbivores: Horses Cows Deer Oxen Sheep Rabbits...
Craigslist, ebay, varathane, paypal, etsy all are consumer to consumer.