Cat intelligence the average human. Within the encephalization quotient proposed by Jerison in 1973, values above 1 are classified big brained, while values lower than 1 are small brained. The domestic cat is attributed a value of between 1–1.71 relative to human value that is 7.44–7.8. The largest brains in the Felidae family are those of the tigers in Java and Bali, of which the largest relative brain size within the "panthera" is the "tigris". It is debated whether there exists a causal relationship between brain size and intelligence in vertebrates. Correlations have been shown between these factors in a number of
Cat foraging for food and sometimes intermittently fed by people, but are typically wary of human interaction. Domestic cats are similar in size to the other members of the genus "Felis", typically weighing between . Some breeds, such as the Maine Coon, can occasionally exceed . Conversely, very small cats, less than , have been reported. The world record for the largest cat is . The smallest adult cat ever officially recorded weighed around . Feral cats tend to be lighter, as they have more limited access to food than house cats. The Boston Cat Hospital weighed trapped feral cats, and