Hi, animal shelters are where lost (or stray) animals are kept. I sometimes volunteer at one, do you as well?
I do not volunteer, but I do donate to our local shelter.  Too many animals are sent to shelters, I think.
Animal rescue group
An animal rescue group or animal rescue organization is dedicated to pet adoption. These groups take unwanted, abandoned, abused, or stray pets and attempt to find suitable homes for them. Many rescue groups are created by and run by volunteers, who take the animals into their homes and care for them — including training, playing, handling medical issues, and solving behavior problems — until a suitable permanent home can be found.
Rescue groups exist for most pet types (reptile rescue, "rabbit rescue
Animal shelter
An animal shelter or pound is a place where stray, lost, abandoned or surrendered animals, mostly dogs and cats, and sometimes sick or wounded wildlife are kept and rehabilitated. While no-kill shelters exist, it is sometimes policy to euthanize sick animals, and any animal that is not claimed quickly enough by a previous or new owner. In Europe, of 30 countries included in a survey, all but four (Czech Republic, Germany, Greece, and Italy) permitted the killing of healthy stray