Dogs can eat many fruits safely, including apple slices, blueberries, strawberries and bananas. Apples must be sliced and should not contain seeds, as both the core and seeds of apples contain potentially dangerous chemicals.
Dogs can also eat blackberries, cranberries and raspberries safely, making berries a safe choice for most dogs. They can eat some melons, including cantaloupe. Dogs can eat orange slices, but they should not be fed the peel, seeds or parts of the actual orange tree because it contains chemicals and oils that may lead to lethargy, diarrhea and vomiting if consumed in sufficient amounts. They can eat watermelon without seeds or rind as well. Pears, pineapples and mangoes are also generally safe.
Dogs can safely eat peaches and apricots, but only if the pit is removed prior to feeding. The pit presents a choking and blockage hazard and may contain toxic amounts of cyanide. Dogs should not be allowed to eat grapes, as grape and raisin poisoning is unpredictable and life-threatening. Figs are known for a high rate of allergic reactions in dogs, so they should generally be avoided as well. Avocados are also unsafe because they can cause gastrointestinal irritation in some dogs.
Any new food should be introduced slowly because sudden dietary changes can cause diarrhea, vomiting and discomfort. Owners can start by feeding the dog a few small bites a day and gradually work up to the desired amount. Dogs with underlying health conditions, allergies or other issues should be seen by a veterinarian before major dietary changes.