Find the dog's name!

Use ur brain..
Crack d below question ..

Mr. Aamir went to the Market with his Dog..
He rode on a horse to the Market, but walked till market.
The horse's name was Chetak and dog was from australia ....
What is the Name of the Dog  that went to the Market??
If you Get the Answer, Your IQ is off the Hook,
This is an IAS question
Solve this, if u r brilliant.