Yes, dogs can eat cucumbers.
According to the ASPCA, there is no evidence that cucumbers are toxic to dogs, but sometimes cucumbers may cause diarrhea and an upset stomach. ASPCA doesn’t recommend feeding dogs with human food.
Cucumber is a popular vegetable for salads and sandwiches, it’s crisp, and tastes fresh. In fact, the main ingredient of cucumber is water, cucumber is a good source of fiber, vitamins and minerals. Cucumber provides vitamin for dog’s skin and improves the dog’s coat. Cucumber is low in calories, it just contains trace amounts of fat and sugar. Cucumber is an ideal food for losing weight because it contains the alcohol acid which can inhibit the carbohydrates into fat. If your dog is overweight, cucumber is the best treat for them.
You should wash to remove residues of pesticides, and cut the cucumber into pieces, make dogs can easily digest it. Don’t feed dogs with pickled cucumber because it contains large amounts of salt and other spices, may be harmful to dogs.
If your dogs eat the cucumber at the first time, you’d better observe dog’s reaction. If there is any bad reaction, you should stop to feed cucumbers.
In conclusion, dogs can eat small amounts of cucumber as a treat, but can’t eat too much. Cucumber just contains almost few nutrients and too much can cause digestive problems like diarrhea.