12/23/2011 at 08:00 AM EST
They comb their hair back and forth!
These female tiger cubs, born in October at Germany's Aschersleben Zoo
, have got sisterhood all figured out: Grooming time is bonding time.
As long as the claws don't scratch beneath the surface, these girls will be fine in the New Year. Come January, they'll be greeting the public when their exhibit opens.