Zucchini

Zucchini (courgette) has no known canine toxin and appears on the AKC's list of vegetables dogs can eat. It is more than 90% water with very few calories, which makes it one of the genuinely useful treats for a dog on a weight-management plan: you can hand over a few pieces without meaningfully touching the calorie budget. The fiber content is moderate and generally well tolerated. Preparation is the whole recipe. Wash it, leave the skin on or peel it, and cut it into coins or cubes sized for your dog's mouth. Raw keeps the crunch that most dogs are actually after; steaming softens it for seniors or dogs with dental disease. Never hand over a whole zucchini — a determined dog will try to swallow a large chunk, and that is a choking and obstruction risk. Start with two or three pieces. Low-calorie does not mean unlimited: a bowl of it delivers enough fiber to produce loose stool, and all treats together should stay within 10% of daily calories. What makes zucchini unsafe is what Americans usually do to it. Zucchini fries and breaded, deep-fried planks carry a fat load that can trigger pancreatitis in a susceptible dog. Grilled zucchini brushed with garlic butter or tossed in an onion-heavy ratatouille is a problem for the alliums, not the squash. Zucchini bread is a dessert — sugar, oil, and sometimes raisins or walnuts, both of which are separately dangerous. One oddity worth knowing: occasional zucchini plants, usually home-grown, produce fruit heavy in cucurbitacins and taste intensely bitter. That compound causes GI upset in people and dogs alike. If a piece tastes bitter, throw the whole squash out rather than feeding it to the dog.