Cats were first domesticated in the Near East around 7500 BC. It was long thought that cat domestication was initiated in Ancient Egypt, as since around 3100 BC veneration was given to cats in ancient Egypt. As of 2017, the domestic cat was the second-most popular pet in the United States by number of pets owned, after freshwater fish, with 95 million cats owned. In the United Kingdom, around 7.3 million cats lived in more than 4.8 million households as of 2019. The English puss, extended as pussy and pussycat, is attested from the 16th century and may have been introduced from Dutch poes or from Low German puuskatte, related to Swedish kattepus, or Norwegian pus, pusekatt. Similar forms exist in Lithuanian puižė and Irish puisín or puiscín. The etymology of this word is unknown, but it may have simply arisen from a sound used to attract a cat.