• My normally lively and active puppy is suddenly acting scared and meek and really tired. She doesn't want to play and she usually plays for hours. We recently changed her food. What could be the problem?

    Behavior changes can have a large number of causes – anything from infectious diseases that just make them feel bad to metabolic disorders that significantly drain their energy levels to even something less dangerous like an environmental change that just has them nervous and on edge. Because some of the causes of behavior change like this can indicate serious medical issues, I do recommend that you get her into her veterinarian for a full examination and possibly diagnostic tests as soon as possible.

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