Don’t Feed Your Dog Custard Apples / Sugar Apples
Also referred to as the cherimoya fruit, we would avoid feeding your dog custard apples or sugar apples. Like regular apples, the seeds of the custard apple contain cyanide, which can be extremely harmful if a dog ingests a large amount of it.
The custard apple is also very sweet and has a relatively high sugar content (up to 28% sugar). Dogs that have digestive systems that can’t handle sugar very well so it’s possible for dogs to suffer from digestive problems like diarrhea and vomiting if they have too many pieces of the custard apple flesh.
One more concern is the allergies. Some dogs may be allergic to custard apples so it’s best to not introduce any new foods that your dog isn’t so familiar with.