
Depending on how in-depth you want to get, you could try
http://www.ncbi.nlm.nih.gov/pubmedJust use it as a search engine, and it will bring up all relevant research articles. So you could search for 'dog coat genetics' or whatever you fancied. After you've searched, you can filter it on the right by clicking 'review' which will give you articles which summarize other people's work (very useful!), or 'free full text' which will show you all open access articles. If there are any you're desperate for, but can't access, PM me and I may be able to help :-D