ETFs Tracking Other Total Bond Market. ETFdb staff has allocated each ETF in the ETF database, as well as each index, to a single âbest-fitâ ETFdb Category. Other ETFs in the Total Bond Market ETFdb Category are presented in the following table. * Assets in thousands of U.S. Dollars.
Kittens sleep 16 to 18 hours per day. Newborn kittens sleep almost all the time. In time, kittens start sleeping less and less, until their sleeping hours are equivalent to 16 hours. The sleeping hours depend on the cat's age and lifestyle.
Because they are on exceptionally good terms with it, I believe cats have much to teach us about the secrets of natural sleep. Cats commonly sleep between 12 and 16 hours a day -- more than most mammals and up to twice as much as humans. Why do they sleep so much? Well, because they can. Cats are predators with few natural enemies, meaning they live under the auspices of a generous, genetically-endowed sense of physical safety.