Vampire bats feed on the blood of birds, cattle, horses, and pigs... and the occasional sleeping human. They need to consume a few tablespoons of blood every day.
Half the manatee's day is spent sleeping in the water, surfacing for air at intervals no greater than 20 minutes. The rest of the time they enjoy grazing in shallow waters.
Half the manatee's day is spent sleeping in the water, surfacing for air at intervals no greater than 20 minutes. The rest of the time they enjoy grazing in shallow waters.