Board Thread:Questions and Answers/@comment-12.249.147.238-20140322181453/@comment-24169511-20140516145840

Information such as their height and wheight is not available directly from Kenkou Cross. As a result, anything you read on other sites isn't considered canon and is, at best, a fan calculation. We don't plan an allowing any non-canonical information to be added to the monster girls profile's.

As for their ages, some of their profiles might hint/indicate at a possible age limit but I've yet to see KC come out directly and say "This is how long X lives for."