In the spring of 1928, Disney asked Ub Iwerks to start drawing up new character ideas. Iwerks tried sketches of various animals, such as dogs and cats, but none of these appealed to Disney. A female cow and male horse were also rejected. They would later turn up as Clarabelle Cow and Horace Horsecollar.A male frog, also rejected, would later show up in Iwerks' own Flip the Frog series. Walt Disney got the inspiration for Mickey Mouse from his old pet mouse he used to have on his farmgalway hotel Sugar Daddie