They stay in pj's all day and curse the rain together.
They race, and sometimes pull on one another's tail / stinger.
Make bathtime so much more fun.
Try to distract mom when the other is getting into trouble.
Make some pretty impressive messes when they combine forces.
Share some of the sweetest of moments.
Will pull the wagon for each other when mom and dad have been worn out.
Are the sidekick and partner that will stand by your side through the bumps, bruises and joys that life has to offer.