music: Disney Tune: "Now don't close your eyes, & don't try to hide..."?

Questions

All mammals have ----------?

All porcupines float in ----------?

Alligators and ---------- have something in common, at least auditorily. They can hear notes only up to 4,000 vibrations a second.?

Almost half the pigs in the world are kept by farmers in ----------?

Although beavers live near rivers, streams, and lakes - they do not eat fish. Beavers eat only plants. They eat poplar trees, carrots, cattail, mushrooms, potatoes, berries, water plants, swamp wood, and fruit. Soft ---------- is the main food for a beaver.?