Yes, even some cows stuck with the moo-dy blues

Some cows put the “moo” in moody. But others are just natural cynics, says a new study. 
In a paper published Jan. 23 in Scientific Reports, researchers from UBC’s animal welfare program found that some calves, just like humans, are more optimistic or pessimistic than others.
Recognizing these personality differences is important to ensure animals are treated well, says professor Marina von Keyserlingk, who led the research team and is a co-author of the study along with D