Rheumatoid factor (RF) is a blood test that measures the amount of the RF antibody in the blood.
Weight ranges from about 7 to 12 kilograms (15 to 26 lb) in females, and from 9 to 18 kilograms (20 to 40 lb) in males.[4] Where does a serval live? The Serval lives in Africa.
Like many cats, Servals are able to purr. The Serval also has a high-pitched chirp, and can hiss, cackle, growl, grunt and meow. Life expectancy is about 10 years in the wild, and up to 20 years in captivity. An adult Serval reaches sexual maturity from 12-25 months of age.