Your traffic will be limited to the local subdivision - which could be both good and bad for the local hair salon.  

Even the color of their hair has nothing to do with it.The key is to establish your rental criteria in advance of offering your unit for rent.

Ever have to wash a water heater (located in a kitchen corner because this is a "vintage" house) covered in two inches of dust and hair?  

If you moved them in knowing they had pets (which would be disclosed on their rental application) and you accepted them anyhow, then I suspect you won't get credit for the 2 year difference in life expectancy of the carpet.We have tenants sign a separate form acknowledging they have received: a signed lease, 2 keys, lead based paint disclosure, Copy of "Protect your family from lead in your house" brochure, and 2 inventory checklists (to be returned within 7 days but usually filled out upon move-in).I would send a refusal letter and require them to take you to court, especially if you are able to demonstrate you were light on your: cleaning charges, repainting expenses, door and cabinet repair, duct cleaning due to pet hair, etc.Don't be too upset if you lose your carpet argument. 

If you have carpet pull up and paint sub floor with Kilz oil base. wash down everything if you have not sealed your baseboard and other trim by caulking the edge, do so this keeps hair from getting between trim and walls.  

(wife would use a little more she has hair.

My dad was a landlord in NYC and all his grey hairs are from that.

From what people report here on BP, the numbers look great for cash flow but turnover, crime, evictions, etc. eat your profits and make your hair fall out.  

He has short black hair.

Thank you , i thought this was good information and when i heard  my hair stood up.