Cat intelligence
The brain of the domesticated cat is about long, and weighs . If a typical cat is taken to be long with a weight of , then the brain would be at 0.91% of its total body mass, compared to 2.33% of total body mass in 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 experiments. However, correlation does not imply causation. Most experiments involving the relevance of brain size to intelligence hinge on the assumption that complex behavior requires a complex (and therefore intelligent) brain; however, this connection has not been consistently demonstrated.
Bobcat
The adult bobcat is long from the head to the base of the tail, averaging ; the stubby tail adds and its "bobbed" appearance gives the species its name. An adult stands about at the shoulders. Adult males can range in weight from , with an average of ; females at , with an average of . The largest bobcat accurately measured on record weighed , although unverified reports have them reaching . Furthermore, a June 20, 2012 report of a New Hampshire roadkill specimen listed the animal's weight at . The largest-bodied bobcats are from eastern Canada and northern New England of the subspecies "L. r. gigas", while the smallest are from the southeastern subspecies "L. r. floridanus", particularly those in the southern Appalachians. The bobcat is muscular, and its hind legs are longer than its front legs, giving it a bobbing gait. At birth, it weighs and is about in length. By its first birthday, it weighs about .