To catch a cloud

I spy a cloud go floating byWhere do you go, Cloud, so high?To the seaShe singsWhere the wild gulls flyThen catch me if you canI cryWe race each other to the seaCan''t catch me, CloudCan't catch meA boy and a dog follow a cloud out to sea, but as the weather worsens he relies on the whales and waves to bear him home.