The Greenhouse Effect by David Reiter

When Tiger the cat moves to Canberra with his owner, he befriends a local, Wanda the blue-tongue lizard, who is suspicious of introduced species. Tiger even condescends to speak to the two mongrels next door, Cleo and Tony. At the local park he meets Prince aof the Sacred Pool, a royal bullfrog, and his loyal followers; and Eudora, a raven with magical powers. Together they must save Earth from the Great Danger, but first Tiger has to prove himself to his new friends. He's game, so long as it doesn't involve missing out on his Car Gourmet!