Feline Greenies Smartbites Healthy Indoor Tuna Flavor Treats
Verified Jun 9, 2026
A crunchy cat treat designed for indoor adult cats, using chicken meal as the main protein source with added fiber from powdered cellulose and beet pulp to support digestion. At about 1.3 calories per piece, it’s relatively low-calorie for a treat, which can help with weight management when used in moderation. The recipe is fortified with taurine, vitamins, and minerals so that the treats contribute some balanced nutrition alongside your cat’s regular diet.
This is a well-formulated crunchy treat for adult indoor cats that emphasizes moderate calories per piece and added fiber for digestive support. Chicken meal provides the primary protein, and the product is fully vitamin and mineral fortified, which is a nice plus for a treat. It’s still a treat, though, so it should be fed in sensible amounts, especially for cats who are prone to weight gain or who have known sensitivities to chicken or wheat.
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At a Glance
KibbleLab Review
Strengths
- Chicken meal as the first ingredient gives a defined, animal-based protein source rather than vague by-products.
- Relatively low calorie density at about 1.3 calories per treat can make it easier to offer rewards without adding a lot of extra energy, if portions are controlled.
- Includes multiple fiber sources (powdered cellulose and beet pulp) that can help support normal digestive function in some indoor cats.
- Fortified with taurine and a full range of vitamins and minerals, so it contributes more than just empty calories compared with many simple treats.
Considerations
- Despite the low calories per piece, the suggested 18 treats per 10 lb cat is a fairly generous amount; for cats prone to weight gain, you may want to offer fewer and reduce regular food accordingly.
- Contains chicken and wheat, which are common allergens for some cats, so it’s not a good fit if your cat needs a limited-ingredient or hypoallergenic approach.
- Uses several cereal ingredients (brewers rice, ground whole wheat, wheat flour), which add carbohydrates that some owners may want to limit in cats with strict calorie or carb restrictions.
Full Ingredient List
Ingredients and analysis reflect manufacturer data at the time of our last update and can change without notice. Always check the actual product packaging before feeding.
Ingredient filtering helps identify compatible options but is not a substitute for a veterinary elimination diet.
Top 5 Ingredients Explained
01
Chicken
Chicken is a common animal-based protein in dog and cat foods, supplying essential amino acids, B vitamins, and energy-dense fats that support muscle maintenance, growth, and overall health; for cats it also contributes toward dietary taurine but must be present in sufficient amounts or provided via supplementation. It is prized for its digestibility and palatability, though some pets develop sensitivities or allergies to chicken, and nutritional value and safety depend on ingredient quality and processing—raw chicken carries pathogen risks and whole bones can pose choking or GI hazards.
02
Animal Fat
Animal fat is used in pet foods as a concentrated energy source and palatability enhancer, and can provide fat-soluble vitamin absorption and essential fatty acids (including arachidonic and linoleic acids, depending on the source) that support skin, coat and overall cellular function—particularly important for obligate carnivores like cats. Because it is calorie-dense and prone to oxidation, fats are typically rendered and stabilized; owners should be aware that high-fat diets can contribute to obesity and may trigger pancreatitis in susceptible dogs, so quality, source, and total dietary fat should be considered.
03
Mixed Tocopherol
Mixed tocopherols are a blend of natural vitamin E compounds (alpha, beta, gamma and delta tocopherols) used in pet foods primarily as a natural antioxidant and preservative to protect fats and fat‑soluble nutrients and extend shelf life. They also supply dietary vitamin E—an essential antioxidant for immune function, skin and coat health and cellular integrity in dogs and cats—and are generally safe at typical use levels, though they are not a substitute for a complete vitamin formulation and may be less effective in animals with fat‑absorption disorders.
04
Brewer's Rice
Brewer’s rice is a milling byproduct of rice processing made up of small broken white rice kernels commonly used in pet foods as a highly digestible carbohydrate source, filler and binder that provides readily available energy for dogs and cats while contributing little protein, fat or fiber. It is generally gentle on the stomach and cost‑effective, but diets using it must supply other ingredients for essential nutrients; pet owners should note its relatively high glycemic load (relevant for weight or diabetic pets), the potential for trace environmental contaminants associated with rice, and not confuse it with brewer’s yeast.
05
Whole Wheat
Whole wheat is used primarily as a carbohydrate and fiber source in pet foods, offering energy, some plant-based protein, B vitamins and minerals and more fiber and nutrients than refined wheat. It can aid digestion and satiety—particularly in dogs—but is not essential for obligate carnivores like cats and may cause allergic or gluten-sensitive reactions in some pets, so it should be avoided in animals with known wheat intolerance, certain metabolic conditions (e.g., obesity, diabetes) or specific dietary restrictions.
Nutritional Breakdown
How to read As Fed versus Dry Matter
As fed shows the numbers straight off the label, water included. Dry matter removes the water so you can compare a wet food and a dry food fairly.What is calorie density
How many calories the food packs per unit. Denser foods mean smaller portions for the same calories.Product Details & Brand
Product Specs
Brand
Greenies is a dental treat brand for dogs and cats under Mars Petcare. It focuses on oral health, offering chews and treats designed to help reduce plaque and tartar buildup and freshen breath. Many Greenies products carry the Veterinary Oral Health Council (VOHC) Seal of Acceptance for plaque and/or tartar control, and the brand is frequently recommended by veterinarians for dental care support.
Visit GreeniesManufacturer
Mars Petcare operates large-scale manufacturing facilities in North America, Europe, Asia-Pacific, and Latin America with formal quality and food safety systems modeled on human food standards. Facilities follow HACCP-based programs, Good Manufacturing Practices, and are routinely audited for compliance with local regulatory bodies (e.g., FDA and USDA in the U.S., FEDIAF-related standards in Europe). Mars maintains in‑house research and development centers, employs veterinarians and pet nutrition scientists, and conducts digestibility and palatability studies and AAFCO feeding trials for many of its complete-and-balanced diets.
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
Greenies Feline Greenies Smartbites Healthy Indoor Tuna Flavor Treats has no recalls since 2014.
Source: FDA Pet Food Recall Database · Monitored daily
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Frequently Asked Questions
Has Greenies ever been recalled?
We have no recalls on record for Greenies. We monitor the FDA Pet Food Recall Database daily.
How does KibbleLab rate foods?
Our scores are based on ingredient composition, nutritional profile, AAFCO compliance, and health considerations. We don't penalize by-products, grains, or synthetic preservatives. Brands cannot pay for higher scores.
Is KibbleLab a substitute for veterinary advice?
No. KibbleLab provides data-driven food analysis, not medical advice. Always consult your veterinarian before making dietary changes, especially for pets with health conditions.
KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.
KibbleLab may earn affiliate commissions through product links. No one can pay for a higher score, or to change what we recommend for your pet.
Product data sourced from manufacturer websites, AAFCO statements, and FDA recall database. Last verified dates reflect our most recent data check.
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