Cockers are compassionate, determined, kind, intelligent, athletic, alert and resilient and make great family pets. The breed does not like being alone, and will bond strongly to an individual person in a family, usually the one who feeds it. Known for optimism, intelligence and adaptability, the breed is extremely loyal and affectionate. The English Cocker Spaniel has a cheerful nature. They rank 18th in Stanley Coren's The Intelligence of Dogs, being of excellent working/obedience intelligence. Due to the breed's happy disposition and continuously wagging tail, it has been given the nickname "merry cocker". They can also be dominant but loyal to their companion.

English Cocker Spaniels in UK and USA/Canada have an average lifespan of 11 to 12 years, which is a typical longevity for purebred dogs, but a little less than most other breeds of their size. The English Cocker Spaniel typically lives about a year longer than the smaller American Cocker Spaniel.