Answer:
Teams do not have mascots (if they like can choose their talisman-symbol of luck). Mascots are used in big events like World Cup football , Commonwealth games,ICC world cup cricket.
Mascots are used generally for two purposes: a. to give some fame to the event b. simply commercial to have more money.
ICC World Cup Cricket 2011 (# countries are hosts): chose
Stumpy the elephant is the mascot