Like most fruits, bananas contain sugar, which can be problematic for dogs in high amounts and lead to gastrointestinal issues, obesity, and diabetes. Your dog would have to eat a large amount of these fruits fairly often to develop these conditions, but it's best to make sure your dog doesn't go overboard.
What happens if a dog eats a banana?
If your dog eats too much banana, you may notice some stomach upsets. Also, if your dog gets into bananas on the sly and eats too many, you'll want to watch its poop. Straining while pooping could mean constipation. If peels were also consumed, a blockage could develop.
Do bananas give dogs diarrhea?
Bananas are safe for a dog to eat in small amounts and could help with gastrointestinal issues. However, too much banana can lead to your dog having an upset stomach and diarrhea due to the amount of extra fiber and sugar.