The red stains are caused by a red yeast growing on the moist hair. By changing the pH of your dogs body, it makes a hostile environment for the yeast to grow. 1/2 tablet of tums once a day will make tears alkaline or 1/2 cap of apple cider vinegar in water to drink will make them acidic. Either will work.
1) At the local level, a backbone is a line or set of lines that local area networks connect to for a wide area network connection or within a local area network to span distances efficiently (for example, between buildings).
Internet backbone. Each line is drawn between two nodes, representing two IP addresses. This is a small look at the backbone of the Internet. The Internet backbone may be defined by the principal data routes between large, strategically interconnected computer networks and core routers on the Internet.