Hi Danman,
If she is in fact constipated you can give her 1 teaspoon of canned plain pumpkin twice a day. If you believe that it may be a blockage from swallowing a toy or non-food item, then you will want to treat this a little more aggressively or with a vet. How long has she not been able to poop?
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Peace and happiness to you and your pet! ~ Christina
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