Yes, believe it or not, there are stupid people in the US who get lions and tigers and leopards as pets, then decide they can't keep them (duhhhh).
Some photos from a recent visit to Big Cat Rescue, in Tampa FL.
(It should be noted that Big Cat Rescue in Tampa has been the subject of MUCH controversy, since most of the cats on exhibit for the tour groups are not actually rescues, but were purchased or bred back when the facility operated as an ordinary roadside zoo under the name "Wildlife on Easy Street". The areas containing rescued cats are not on public display)
Bobcats
Siberian Lynx
Ocelot
Cougars
Servals
Caracals
Leopards
Black Leopard
Lion
Tigers