Read the following passage and then select the correct answer: According to some sources, more than 60 percent of Americans currently own a dog. Dogs can be strong companions, but they also have needs that many people forget to address. Without proper hygiene, dogs can become matted and sick, just the same as any human being. Because of these reasons, it is essential that Americans begin to develop regular habits of dog washing and grooming. Which of the following sentences provides support for the author's claim?