KAOS: One-term (or less) presidents (last name only)?

Questions

The hummingbird's tiny ----------, 4.2% of its body weight, is proportionately the largest in the bird kingdom.?

The ---------- eagle of Africa hunts over a territory of 250 square miles a day.?

Of the 250-plus known species of shark in the world, only about 18 are known to be ----------?

Horned ---------- eat ants. They wait in areas where ants are working and when one passes by, they flick out their tongue, catch their prey, and swallow without chewing. Apparently their digestive tract is immune to bites and stings.?

Cats have more than one hundred vocal sounds, while dogs only have about ----------?