Answer:
1. She assumes that the reader wants a "not yappy" and large(60+ pound) dog
2. She states that they "present problems that smaller dogs avoid".
3. The author worries about the dog's lifetime, travel hassle, reach, and strength.
4. The author's ideal dog is one that lives long, is easy to take places, can't reach up on countertops, and is not strong enough to pull during walks.
Explanation:
Not much to explain. The writer seems to be very biased towards dogs. :)
