Detailed text transcripts for TV channel - KGO - 20120507:10:55:00
[ female announcer ] new iams senior plus. see the iams difference or your money back. [ dog ] i am an iams dog for life. ♪ well, now to our favorite story of the day. and i love this. we've all heard of the rule, right? you drop food on the floor and you have three or in some cases five seconds to pick it up before it's no good. >> the five-second rule is usually my rule. five seconds. if i'm hungry, hour and a half. but is it really true? a new study says not all food is created equal when it comes to on the floor resiliency. with more on this story, here's abc's t.j. winick. >> reporter...