average lifespan of russian blue cat
diet | average weight of the russian blue cat. To keep your cat in good condition and healthy, you should feed it the best cat food possible. The chapter on cat food provides excellent information on the different types of feline foods. Water and not milk is also an essential part of the diet. The Average Weight. Weight differs between male and female cats, but on average they should weigh between 3.0 - 5.5 kg (7 - 12 lb). Life expectancy is dependent on numerous factors which are explained in detail in the chapter on how long do cats live. Generally speaking the average life expectancy of the Russian Blue cat is between 10 - 15 years.