Regarding asteroid size units:
It's all just one guy, Aaron Reich at the Jerusalem Post. Since March 1st, he has warned us about asteroids the size of 14 flamingos, 145 horses, 112 camels, 27 pandas, 69 American alligators, 23 borzoi dogs, 22 tuna fish, 33 armadillos, 18 platypus, and (for a Passover pass-over) 787 matzahs.
I have nudged my brother the NASA asteroid guy to make contact and maybe have NASA join the fun.