我认为狗狗吃苹果会吐的原因可能是因为苹果中含有的膳食纤维过多，导致狗狗的消化系统承受不起，从而引发呕吐。另外，狗狗的胃肠道并不能很好地处理和吸收这些膳食纤维，因此如果摄入过多，这可能会导致一系列消化不良的症状，比如呕吐、腹泻等。还有一种情况是，dog may experience vomiting due to an allergy to apples. If your dog has never had apples before and vomits after eating them, it's best to stop feeding them apples and consult a veterinarian to rule out any allergic reactions. In general, it's possible for dogs to experience vomiting after eating apples, but not all dogs will have this reaction. If your dog vomits after eating an apple, you should seek medical attention immediately and avoid giving them apples in the future.