Ned's Newt
When nine-year-old Ned Flemkin feeds his pet newt a can of Zippo, he ends up turning into a 6-foot shapeshifting pal for life.

Ned is made to play with his obnoxious rich cousin, Norman, who has a female pet newt. When Ned feeds both Newton and the other newt Zippo food, they both change, and Norman's newt wants revenge on Norman for constantly neglecting him. Newton falls for the female newt, whom he names Buttercup, and Norman is terrified by the two giant creatures that have suddenly appeared.