How many hours do astonauts sleep in space?

What is or what can be done for gum growth between teeth in animals? What is a vertabrey? What are some common characteristics of a cat with black whiskers? Can yabbies breathe underwater? How can I effectively get rid of worms on dogs? What is the life cycle of a knockout rose? Why does she have tail? What other animals live in cardinals habitats? What properties of fur are there? Can betta fish live peacefully with any other fish in a shared aquarium? Can humans eat lily pads? What should I do when my cat won't stop meowing? How many pets does eve bunting have? What animals evidence is admissible in a court of law? What happens to animal bodies when they die? Why does my cat keep biting its lip? What kingdom do a toxoplasma belong to? What are the differences between dogs and puppies and cats and kittens in terms of behavior and care requirements? How does temperature affect the growth rate of salmon? Where is the beluga in endless ocean?