I agree with everyone above. Even the non-extra tiny ones should be carried in certain circumstances. Toto is normal sized, about 5 lbs, but he gets tired quickly (plus he's almost 10) so I carry him when he doesn't want to walk anymore. If we go to a store, I carry him in his sling. He feels more safe and doesn't bark as much at everything.   
Another popular thing is a stroller. Those are more pricey, but if you have more than one small dog it may be worth it. I don't have one just bc I don't want to be a dog stroller person, LOL but many people use it and they love it.     
				__________________    The T.U.B. Pack! Toto, Uni, & Bindi  RIP Lord Scrappington Montgomery McLimpybottom aka El Lenguo the Handicapped Ninja 10-12-12          |