While the number of households owning a pet has increased in all categories from the last survey, the proportion of ownership by species has remained fairly stable. Dogs and cats are still the most popular species, owned by 46.7 percent and 37.3 percent of U.S. households, respectively. After a decline in 2010, freshwater fish returned to ownership levels previously reported from 2000 to 2008 (12 percent). The same can be said for bird ownership, which dipped in 2008 and 2010 to five percent, but is now back up to 5.7 percent. Horse ownership rebounded in 2012, returning to 2.3 percent after a slight drop in 2010. Small animal and reptile ownership levels have increased to 5.7 percent and 4.6 percent, respectively. Saltwater fish ownership saw an increase as well, at 1.5 percent of the total (online) U.S. population. More households than ever before own small animals, reptiles or saltwater fish.