
Dogs require a balanced diet to stay healthy, which includes protein, fats, carbohydrates, vitamins, minerals, and water. The dietary needs of dogs vary depending on their life stage, breed, health, and activity level. For instance, puppies under the age of one require a diet that supports their energetic lifestyle and development, while dogs over seven years old need food that supports their mobility and brain function. Dogs can meet their nutritional needs by eating a combination of plant and animal foods, and their diet should be adjusted gradually over time. It is important to ensure dogs have access to fresh, clean water at all times, as it is an essential part of their nutrition.
| Characteristics | Values |
|---|---|
| Nutrients | A dog's diet should include protein, fats, carbohydrates, vitamins, minerals, and water. |
| Energy | The energy content of a dog's diet determines how much food they should eat. Dogs eating a diet high in energy will eat a smaller amount. |
| Age | A dog's nutritional needs change as they age. For example, puppies will need a diet that supports healthy brain, eye, and bone development, while older dogs will need food that supports their mobility and brain function. |
| Health | Dogs with health conditions such as kidney issues, joint pain, arthritis, skin problems, digestive issues, or food allergies may need a special diet. |
| Weight | The amount of food a dog should eat depends on their breed, age, and size. You should be able to feel but not see their last two or three ribs, and they should have a clear waistline. |
| Hydration | Water is essential for dogs, and they should always have access to fresh, clean water. Wet food can supplement water intake. |
| Treats | Treats and table scraps should not exceed 10% of a dog's daily calories. |
| Food quality | It is recommended to feed your dog the highest-quality food you can afford. Dry food tends to have a higher concentration of nutrients and may be better for dental health. |
| Food type | Dogs can meet their nutritional needs by eating a combination of plant and animal foods. Vegetarian diets can be suitable if formulated by a veterinary nutritionist. |
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What You'll Learn

Energy requirements
A dog's energy requirements depend on several factors, including its breed, age, size, and activity level. For example, puppies under one year old need a diet that supports their energetic lifestyle, bone development, and healthy brain and eye development. On the other hand, older dogs may need a diet that supports their mobility and brain function.
The energy content of a dog's diet is largely determined by fats, followed by proteins and carbohydrates. Carbohydrates provide energy in the form of glucose and are a significant source of dietary fibre, which is essential for a dog's gastrointestinal function. A diet high in carbohydrates can help maintain a healthy colon and gut microbes. Growing dogs and those with high energy needs should consume at least 20% carbohydrates in their diet.
Proteins are crucial for muscle, skin, hair, nail, cartilage, tendons, and ligament formation and maintenance. They also assist in hormone, antibody, and blood formation. Animal protein sources contain higher amounts of essential amino acids, which dogs need to maintain a healthy life. While plant-based proteins have lower digestibility, dogs can be sustained on a completely plant-based protein diet if properly balanced and formulated by a veterinary nutritionist.
The amount of food a dog should eat depends on its energy requirements. A dog on a high-energy diet will consume smaller portions, so it is crucial to ensure the percentage of other essential nutrients is sufficient for the smaller volume consumed. It is important to note that a sudden change in diet can upset a dog's stomach, so any adjustments should be made gradually.
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Nutrients and nutritional requirements
A dog's nutritional requirements change as they age, so their diet should be adjusted accordingly. For instance, puppies under one year old require a diet that supports their energetic lifestyle and promotes healthy brain, eye, and bone development. On the other hand, dogs over seven years old should transition to a diet that supports their mobility and brain function. Additionally, dogs with specific health conditions, such as kidney issues, joint pain, arthritis, skin problems, digestive issues, or food allergies, may need to be fed a special diet tailored to their needs.
The dietary needs of dogs vary, but they typically belong to the scientific order Carnivora, which includes mammalian animals with similar tooth structures. Some members of this group are obligate carnivores, requiring meat in their diet, while others can meet their nutrient requirements through plant material or a combination of meat and plants. Dogs have adapted to an omnivorous diet, and their nutritional needs can be met through a combination of plant and animal foods. However, an all-meat diet would be unbalanced and insufficient to meet all their nutritional needs.
A balanced dog diet includes protein, fats, carbohydrates, vitamins, minerals, and water. The Association of American Feed Control Officials (AAFCO) guidelines help ensure that commercial dog foods meet these nutritional needs. According to AAFCO, six essential nutrients are required to support life and function in dogs. While the energy requirements of dogs may vary, it is crucial to meet their specific energy needs to prevent unwanted weight gain or loss. Fats contribute significantly to the energy content of the diet, followed by proteins and carbohydrates.
Proteins are essential for the formation and maintenance of muscles, skin, hair, nails, cartilage, tendons, and ligaments. They also play a role in hormone, antibody, and blood formation. Animal protein sources tend to have higher amounts of essential amino acids, which are necessary for a healthy life. While plant-based proteins have lower digestibility, dogs can be sustained on a completely plant-based protein diet if properly balanced by a veterinary nutritionist. Carbohydrates provide energy in the form of glucose and are a vital source of dietary fibre, which supports gastrointestinal function. Vitamins and minerals are essential for various chemical reactions in the body, including bone development and strength.
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Water
Most dogs drink enough water, but some may not, so you may need to find ways to actively encourage them to stay hydrated. The size of the water bowl can play a part in how much dogs drink. Tall, narrow bowls are best for dogs with long ears, such as Bassett Hounds and Spaniels. Low shallow bowls are best for small breeds, and a large, wide bowl suits medium and larger breeds. Make sure their water is always fresh, clean, and easily accessible to encourage regular drinking.
If your dog still isn’t drinking enough, you can supplement their water intake with wet food. Wet food also contains much less water and a higher concentration of nutrients, meaning you don’t need to feed your dog as much. It is also easier to eat for dogs recovering from an injury or operation and can be beneficial for animals with certain illnesses.
In some cases, a lack of thirst can be a sign of an underlying condition. If you are concerned about your dog's diet or water intake, it is recommended to speak to your local veterinarian or vet nurse for advice on your dog's individual needs.
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Human food to avoid
A well-balanced dog diet includes protein, fats, carbohydrates, vitamins, minerals, and water. The dietary needs of dogs vary depending on their breed, age, size, health, and activity level. It is important to meet your dog's specific energy requirements to prevent unwanted weight gain or loss.
Chocolate
Chocolate is poisonous to dogs. It contains a stimulant called theobromine, which is toxic to dogs and can cause kidney failure.
Onions, Garlic, and Chives
The onion family, whether dry, raw, or cooked, is toxic to dogs and can cause gastrointestinal irritation and red blood cell damage.
Grapes and Raisins
Since dogs are not able to process tartaric acid, exposure to grapes or raisins can lead to kidney damage.
Macadamia Nuts
Macadamia nuts are poisonous to dogs. They contain a toxin that can affect a dog's muscles and nervous system, resulting in weakness, swollen limbs, and panting.
Almonds
Almonds may block the esophagus or tear the windpipe if not chewed completely. Salted almonds are especially dangerous as they can increase water retention, which is potentially fatal for dogs prone to heart disease.
Raw Meat and Raw Eggs
Raw meat and raw eggs can contain harmful bacteria such as Salmonella and E. coli. Raw eggs also contain an enzyme that can interfere with the absorption of certain vitamins, leading to skin and coat problems.
Cinnamon
While not toxic, cinnamon can irritate the inside of a dog's mouth, making them uncomfortable and sick. It can also lower a dog's blood sugar and may lead to diarrhea, vomiting, an irregular heartbeat, and liver disease. If inhaled in powder form, it can cause coughing and choking.
Ice Cream
Ice cream contains a lot of sugar and some dogs are intolerant to lactose.
Alcoholic Beverages
Alcohol can cause vomiting, diarrhoea, incoordination, depression, difficulty breathing, tremors, changes in blood pH, coma, and even death.
It is important to note that even healthy foods fed in excess can lead to canine obesity, so it is crucial to monitor your dog's diet and make adjustments as needed. Always consult with a veterinarian if you have any concerns or questions about your dog's specific nutritional needs.
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Age-specific dietary needs
A dog's nutritional requirements vary according to its life stage, breed, health, and activity level. It is crucial to feed your dog a well-balanced diet that meets their specific needs. Here is a detailed guide to the age-specific dietary requirements of dogs:
Puppies
Puppies have distinct nutritional requirements from adult dogs. They need more energy (calories), protein, vitamins, and other nutrients to support their rapid growth. It is recommended to feed puppies three to four times a day until they are around 16 weeks old. From four to six months old, you can transition to twice-daily feedings. Puppies should be fed high-quality puppy kibble or tinned foods, as they provide the necessary nutrients for their development. A puppy's diet should include the right amount of calcium to support bone growth and prevent joint disorders.
Adult Dogs
Adult dogs can be fed twice daily, though larger breeds may benefit from three meals a day to reduce the risk of stomach bloating and twisting after large meals. Their diet should still be well-balanced, including protein, fats, carbohydrates, vitamins, and minerals. Monitor their water intake, as dogs on a moist diet will usually drink less throughout the day.
Senior Dogs
Senior dogs, typically those over seven years of age, have different nutritional needs. Their diet may include lower calories, higher protein, lower sodium, and fewer carbohydrates. Senior dog food often contains ingredients to support joint health, intestinal health, and brain function. Omega-3 fatty acids are also added to some senior dog foods to support joint and brain health.
It is important to consult a veterinarian or a veterinary nutritionist to ensure that your dog's diet meets their specific needs at each life stage.
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Frequently asked questions
A balanced dog diet includes protein, fats, carbohydrates, vitamins, minerals, and water. The dietary needs of dogs vary, with some requiring meat in their diet, while others can meet their nutritional requirements by eating plant material. Dogs can also be sustained on a completely plant-based protein diet, but it is best to consult a veterinary nutritionist before making this decision.
It is important to meet your dog's specific energy requirements to prevent unwanted weight gain or loss. The amount of food your dog should eat depends on its breed, age, and size. You should be able to feel, but not see, their last two or three ribs. If you are switching your dog's food, do so gradually by adding small amounts of new food to their current food over the course of a week.
Some common human foods that are toxic to dogs include potatoes, grapes, raisins, onions, garlic, avocado, and chocolate. It is also important to note that treats and table scraps should not make up more than 10% of your dog's daily calories.
If your dog is not getting the proper nutrition, they may experience weight gain or loss, digestive issues, or a lack of energy. If you are concerned about your dog's diet, it is best to consult your veterinarian for advice.











































