With all the information at hand online within the click of a button, it always amazes me at what people come on here and ask as opposed to just googling the information right away haha. Your question is almost so hilarious that I kept wondering if you were joking, because anyone should know better. Im not trying to be rude or make fun, just the idea of a Ostrich being kept in the house is simply not very bright. First of all, no Ostrich is 6 ft, they range from 7-9 ft tall, and 300-480 lbs. They are not intelligent animals at all, and cannot in anyway be potty trained or disciplined. They do not spit, but they can kick with a powerful enough force to break the neck of a grown Lion, and they will. The hoof like claws they have can rip chunks out of your chest and stomach if one decided to attack you. Biggest reasons they attack humans are being cornered, protecting eggs or chicks, and enraged testosterone during breeding season within males. As Nicophorus already mentioned, they will quickly destroy your house, and crap all over it. A birds metabolism is 7 times faster than a humans, and they will crap several times every hour, so how would you keep that cleaned up? You cant put a giant bird that you have no control over in a diaper. Ostriches are plains birds, and live in large open grasslands to run, graze, and keep healthy. If you dont have a large enough area for this, they will cost alot to feed, & their legs will grow crooked to the point that they may have to be killed. This also applies to Emus and Rheas, they are just not as large.