i would say by the time you get a building and any permits that my be needed and all the tanks for your stock as well as supplies to sell then your invetory(SP) of animals and thats is after getting intouch with all the different wholesalers which you will need to do inorder to get the best deals on your stock. and then you will need a reserve of cash for the time it takes to get the word out that your there. i would say you would need close to $100,000 depending on the size of store. when i had my paintball store we had 35,000 -45,000 in stock alone. then i had my rent for a store front and all the city papers like name of store and tax papers and lawyer and insurance which is always good.