There are different species of spiders.
Spider . , at least 45,700 spider species , and 113 families have been recorded by taxonomists . However , there has been dissension within the scientific community as to how all these families should be classified , as evidenced by the over 20 different classifications that have been proposed since 1900 . Females of many species care for their young , for example by carrying them around or by sharing food with them .