Animals March 5, 2020 8:22 am Your Dog Is a Good Dog. But Most Dogs Show Signs of Aggression, Study Says Is your dog a good boy or girl? Consider yourself lucky. A new study by researchers in Finland found that 72% of dogs showed problematic behavior like aggression. US & World Videos 0:48 Target to lower prices on about 5,000 basic goods 0:47 WATCH: Comet fragment lights up the sky in Portugal 1:58 ICC seeking arrest warrants for Israeli and Hamas leaders 1:43 World reacts to death of Iran's president 1:07 Cargo ship that crashed into Baltimore bridge moving back to port