Here's why:
* Seeds: Apple seeds contain cyanide, which is poisonous to dogs.
* Stems: The stem of an apple is also tough and can be a choking hazard.
* Digestive issues: The core of an apple is difficult for dogs to digest and can cause stomach upset.
What to do:
* Remove the core and seeds before giving your dog any apple.
* Offer small pieces of apple, as too much can cause digestive problems.
* If you suspect your dog has eaten an apple core, contact your veterinarian immediately.
Remember: It's always best to err on the side of caution and avoid giving your dog any part of an apple core.