Melting snow has revealed

Two bouncy balls!
I throw them,
blue with my right hand, orange with my left,
and good dogs give chase.

Max catches the blue one, he is faster,
then he drops it when the orange one comes close and fetches that one.

Sgiob happily fetches the blue one.

Until the time that both balls went tumbling down the meadow-hill and somehow only the blue one has come back.

I am picturing a very curious chipmunk — there’s a woods at the bottom of the meadow — or even a coyote some twilight who sniffs it and sees it and knows that it is a toy.