05/21/2012 11:41 am ET Updated Dec 06, 2017

WATCH: Do Small Dogs Know They're Small? From Victoria Stilwell

Dog Behaviorist Victoria Stilwell explains why small dogs sometimes become aggressive with larger dogs.

See Victoria's Tips For Raising A Happy, Healthy Dog Here

See more clips

Add Marlo On Facebook:

Follow Marlo on Twitter:


Weekly Newsletter

Sign up to receive my email newsletter each week – It will keep you up-to-date on upcoming articles, Mondays with Marlo guests, videos, and more!

Sign up here