Corgis come in two varieties. The smaller more common Pembroke (no tail) and the larger Cardigans which we have. Think big dog in a compact package. They are smart, agile, and energetic herders. They shed at least twice a year so regular brushing helps. I think chewing has more to do with boredom than breed but it has never been a problem. We had two dogs for a long time so they may have entertained one another. They are expressive dogs and tend to be clowns. Aggressive behavior would be unusual.