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|summary=Nobody would really expect a cat and a goldfish to be best friends but this is the unlikely pairing that we come across in Michael Foreman's ''Friends''. It's a touching tale of what happens when Cat sets out to liberate his slippery friend, Bubble, from his confined bowl and to show him the world. Is Bubble ready to be set free though or would he rather stay with his best friend?

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Cat is a cat and Bubble is a goldfish and as Cat points out at the start of this story, there are quite a few differences between them. The main one is that Cat is able to wander wild and free whereas Bubble is stuck in his tank and can only swim round and round or up and down. Because Bubble is his friend, Cat finds this quite upsetting; so much so, that he tells the reader: