i wrote an ENTIRE thing on these and then my browser crashed!!! augh!!!!!! will come back to this later

tl;dr:

• they're beetles, abt the size of a quarter
• they're agricultural pests (but cute ones)
• females bore holes in seeds and lay their eggs there
• the grubs emerge when ready to pupate
• adults eat seeds, leaves, fruit; prefer hard plant matter
• they curl into a ball and play dead when startled (and sometimes roll around)
• popular pets, easy to keep
• they sometimes accept beetle jelly as a treat