A no-kill shelter is an animal shelter that does not kill healthy or treatable animals even when the shelter is full, reserving euthanasia for terminally ill animals or those considered dangerous to public safety. A no-kill shelter uses many strategies to promote shelter animals; to expanding its resources using volunteers, housing and medical protocols; and to work actively to lower the number of homeless animals entering the shelter system. 10% of animals can be killed in a no-kill shelter and still be considered a no-kill shelter. Kittens under 8 weeks old and feral cats may still be euthanized.