Domain mapping go daddy

I am having problems with domain mapping to my website. I got one domain to map just fine but have been unsuccessful with mapping other domains. Everything seems to be setup the same but all but one point back to original base domain.

Base domain barncams.com
Working site cow-cam.com goes to barncams.com/cow-cam

Non working example site Cowcameras.com and cowcamera.com which should point to barncams.com/cowcameras and barncams.com/cowcamera but instead point to barncams.com

Thanks for your help