Gum disease is signaled by a persistent bad breath and foul taste in the mouth, and is caused by a build up of plaque on teeth. (thefashionablehousewife.com)
Booby traps, such as these that foul the taste of stools, are a great way for the object to «punish» a dog for an undesirable behavior because it avoids the side effects that often comes from a person applying the punishment. (neogreyhound.com)