'These "have one advantage over most other pets.  They can be left alone for a day or two without food"'
fish
AROUND THE WORLD BOOK: These have one advantage over most other pets.  They can be left alone for a day or two without food
These "have one advantage over most other pets.  They can be left alone for a day or two without food"
These "have one advantage over most other pets.  They can be left alone for a day or two without food"
AROUND THE WORLD BOOK
fish
AROUND THE WORLD BOOK