Snowy the doganaut

When Snowy the dogonaut arrives on Earth in a UFO, Marco the vet is concerned that Snowy should look like a normal Earth dog and operates on him to make Snowy fit in. But when Marco leads an expedition to Snowy’s planet he’s shocked to find himself operated on to fit in there.

Does a Sea Cow Say Moo?

Summary: When Flash arrives on the beach by spaceship, he quizzes Jack about why some names on the sea are the same as on land, such as a school of fish and a school in town, or a cow in the sea and a cow in a field. Includes "wacky fish facts

Beegu

A Red Fox Book
Summary: A small creature from space finds no welcome on Earth, until she meets a group of children on a playground. Suggested level: junior