Name The Year: Howard Hughes' "Spruce Goose" flies for 1st (and last) time.?

Questions

An adult lion's roar can be heard up to five miles away, and warns off intruders or reunites scattered members of the ----------?

---------- are social birds that congregate in huge flocks. While the flock grazes in a field, lookouts will be posted to watch for approaching danger. They'll raise the alarm if humans approach.?

An adult walrus typically eats about 3,000 ---------- per day.?

---------- are the smallest breed of dog used for hunting. They are low to the ground, which allows them to enter and maneuver through tunnels easily.?

An ---------- can go through 2,000 to 3,000 teeth in a lifetime.?