Why do cats like fish?

This post contains affiliate links. See the affiliate disclaimer here.


Cats and fish have a long-standing relationship that dates back centuries. From cartoons to memes, the idea of a cat chasing after a fish has become a popular cultural image. But have you ever wondered why cats seem to love fish so much? In this article, we’ll explore the reasons behind why cats have such a fondness for fish, including their evolutionary background, nutritional benefits, sensory appeal, cultural influence, and domestication.

Evolutionary background

Cats are obligate carnivores, which means that their diet consists mainly of animal protein. In the wild, cats primarily eat small prey, such as mice, birds, and rabbits. However, fish also play a significant role in the natural diet of cats. Many species of wild cats, such as the fishing cat and the flat-headed cat, are known for their ability to hunt and catch fish.

Cats’ taste for fish can be traced back to their evolutionary history. Wild cats evolved in environments where fish were readily available, such as near rivers, lakes, and oceans. Over time, cats developed a taste for fish and began to incorporate it into their diet.

Furthermore, fish is a good source of essential fatty acids, such as omega-3 and omega-6, which are crucial for a cat’s overall health. These fatty acids help maintain healthy skin and coat, support immune function, and promote brain development. As a result, cats may have evolved to crave fish as a way to obtain these important nutrients.

Nutritional benefits of fish for cats

Fish is an excellent source of protein and other essential nutrients that are beneficial for cats’ health. Here are some of the nutritional benefits of fish for cats:

  1. Protein: Fish is a high-quality source of protein, which is essential for building and repairing muscles, tissues, and organs.
  2. Omega-3 fatty acids: Fish is rich in omega-3 fatty acids, which are essential for maintaining healthy skin and coat, supporting immune function, and promoting brain development.
  3. Vitamin D: Fish is one of the few dietary sources of vitamin D, which is essential for bone health and calcium absorption.
  4. Minerals: Fish is a good source of minerals such as iron, zinc, and selenium, which are important for various bodily functions.

However, it’s important to note that not all types of fish are safe or appropriate for cats to eat. Some fish, such as tuna, contain high levels of mercury, which can be harmful to cats if consumed in large amounts. Additionally, fish should be cooked thoroughly before feeding it to your cat to reduce the risk of bacterial contamination. It’s best to consult with a veterinarian to determine the right type and amount of fish to include in your cat’s diet.

Sensory appeal of fish to cats

Cats are known for their keen sense of smell, and the scent of fish can be particularly enticing to them. The strong odor of fish comes from a compound called trimethylamine oxide (TMAO), which is produced by marine animals as a defense mechanism against predators.

The smell of TMAO is attractive to cats because it triggers a response in their olfactory system, which is closely linked to their brain’s reward center. When a cat smells the scent of fish, it can activate feelings of pleasure and satisfaction, similar to the way humans feel when they smell their favorite food.

In addition to their sense of smell, cats also have a highly developed sense of taste. The taste receptors in a cat’s mouth are tuned to detect savory, meaty flavors, which are also found in fish. This explains why cats find the taste of fish so appealing.

Overall, the combination of the strong scent and savory taste of fish makes it an irresistible treat for many cats. However, it’s important to feed fish in moderation, as a diet that’s too high in fish can lead to nutritional imbalances and health problems.

Cultural influence on cats and fish

The cultural association between cats and fish can be traced back to ancient times. In ancient Egyptian mythology, the goddess Bastet, who was depicted as a cat, was closely associated with the Nile River and its fish. The ancient Greeks and Romans also had a fondness for cats and kept them as pets, often feeding them fish.

In modern times, the association between cats and fish has been reinforced through popular culture. Cartoons and movies often depict cats chasing after fish, and the image of a cat with a fish in its mouth has become a popular meme.

This cultural influence may also play a role in the way cats perceive fish. Cats are highly attuned to their environment and may be influenced by the sights, sounds, and smells around them. If a cat has been exposed to fish through popular culture or through its owner’s feeding habits, it may develop a stronger preference for fish.

However, it’s important to note that cultural influences are just one factor in a cat’s diet and behavior. Cats have unique individual preferences and nutritional needs, and it’s essential to consult with a veterinarian to ensure that they are getting a balanced and healthy diet.

Domestication and feeding habits

The domestication of cats has also played a role in their affinity for fish. Domestic cats have been bred over generations to have a more docile and cooperative temperament, making them more adaptable to living with humans. This domestication has led to changes in their feeding habits as well.

In the wild, cats would have to hunt for their food and rely on their instincts to survive. However, domestic cats are often fed by their owners and may not have the same opportunities to hunt and catch fish. As a result, they may have developed a preference for fish as a result of their exposure to it through human feeding habits.

Owners who want to feed their cats fish should be careful to choose appropriate types and amounts of fish. As mentioned earlier, not all types of fish are safe or appropriate for cats to eat, and feeding too much fish can lead to nutritional imbalances. It’s also important to ensure that fish is cooked thoroughly to reduce the risk of bacterial contamination.

In addition to fish, cats require a balanced diet that includes a variety of proteins, fats, carbohydrates, vitamins, and minerals. Consulting with a veterinarian and choosing high-quality commercial cat food can help ensure that your cat is getting all of the nutrients they need.


In conclusion, cats’ affinity for fish is likely due to a combination of evolutionary, nutritional, sensory, cultural, and domestication factors. Fish is a nutritious source of protein, omega-3 fatty acids, vitamin D, and minerals that can be beneficial for cats’ health when fed in moderation. However, it’s important to choose appropriate types and amounts of fish and to consult with a veterinarian to ensure that your cat is getting a balanced and healthy diet. While cats’ love for fish may be cute and entertaining, their health and well-being should always come first.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top