[Dailydrool] Why is she so skinny?

[sally king]

Tessie, my step basset, is a happy, healthy 2-year-old. She is small for her age, but full of vim and vigour.
However, she is skinny. Really skinny. If I didn't know she was loved and spolied I would think she was abused.
She has a hearty appitite eating more than her much bigger (and fatter) brother and is also a very accomplished food thief. The dogs are fed seperately so she is definately getting all her (top quality, dry) food. In fact, the reason the are seperated, is because she would eat her food and his!
Tessie has actually lost over 5lbs in the past year, despite it being a time it would be expected she would grow and weigh more.
She is up to date on all her shots and has been wormed.
I am now worried about her as her weight is becoming just too low. XH is also worried and planning to take her to the vet again this week (he took her a couple of weeks back). 

Does anyone have any ideas why she is losing weight?

Thanks
Sally, with Rolph and Clara, UK

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