It takes for how long does symptoms of rabies appear?

2-3 wks, but rare: Rabies has an incubation period (time from exposure to symptoms) of 2-3 weeks, but is very rare in north america. Most rabies on this continent is found in wild rodents & animals such as squirrels, prairie dogs, bats and even raccoons. If a person gets bit by a dog which doesn't have proof of rabies vaccination, the local animal control department can often quarantine the dog for observation.

Rabies: Rabies is a preventable viral disease of mammals most often transmitted through the bite of a rabid animal. The vast majority of rabies cases reported to the Centers for Disease Control and Prevention (CDC) each year occur in wild animals like raccoons, skunks, bats, and foxes. http://www.cdc.gov/rabies/index.html