Spike's little paintings have thrilled many online and attracted a growing fan base. Ms Bryant has since decided to auction them off on Ebay, with bids reaching over $130 (£100). She added that 15% of proceeds would go to a UK-based conservation group for stag beetles. "Poaching of stag and rhinocerous beetles is a big issue. Some beetles may be wild-caught, which can deplete their numbers in that habitat," Ms Bryant advised. "If you are interested in raising them, look into what is legal and know where your beetle is coming from."