1. **Coughing**: Frequent coughing, especially after exercise or at night, can be a sign of heart disease.
2. **Difficulty Breathing**: If your boxer seems to struggle to catch their breath, especially after mild activity, it’s a cause for concern.
3. **Fatigue**: If your boxer is less energetic or is tiring more easily during walks or playtime, it could indicate heart issues.
4. **Fainting or Collapse**: Sudden fainting or collapsing can be a serious sign of heart problems and requires immediate veterinary attention.
5. **Swollen Abdomen**: Fluid accumulation in the abdomen can occur with heart disease. If you notice a distended belly, consult your vet.
6. **Weight Loss or Poor Appetite**: A boxer that is losing weight or showing a lack of interest in food may be experiencing health issues, including heart disease.
7. **Pale Gums**: Check your dog’s gums; if they appear pale or bluish, this could indicate a lack of oxygen due to heart problems.
If you observe any of these signs, it’s important to schedule a veterinary appointment for a thorough examination. Early detection and treatment can significantly improve your boxer's quality of life.
This answer doesn't make sense or isn't related to the question. Mark it as a probable hallucination of the AI model.