Chelsea's father was a full blooded pug. Her mom was half chihuahua and half pug. Chelsea came out unusually small due to her quarter-chi heritage, and looks like a "mini pug."
Often pugs don't have sufficiently expressive eyes and give the impression of being dim-witted. They are generally incredibly smart dogs but you can't always see it in their expressions. The chi in Chelsea's blood has given her the expressiveness of a chihuahua, you can almost read her mind from the looks she gives.
This little smarty does several tricks on command. She loves to play with other dogs and doesn't mind at all if they're five to ten times bigger than she is, she'll run with the biggest of 'em.
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