Photos: Animal Shelters

A dog peers out from a pen as a caretaker performs morning cleanup duties at the L.A. County animal shelter in Baldwin Park, one of the oldest and most overcrowded facilities, with the highest euthanasia rate.  (Luis Sinco / Los Angeles Times)

Dogs are housed in pens at the L.A. County animal shelter in Baldwin Park, one of the oldest and most overcrowded facilities, with the highest euthanasia rate.  (Luis Sinco / Los Angeles Times)

Attendants put a pair of dogs through a temperament test before admitting them for adoption at the L.A. County animal shelter in Baldwin Park, one of the oldest and most overcrowded facilities, with the highest euthanasia rate.  (Luis Sinco / Los Angeles Times)

A woman and child look for a dog to adopt at the L.A. County animal shelter in Baldwin Park, one of the oldest and most overcrowded facilities, with the highest euthanasia rate.  (Luis Sinco / Los Angeles Times)

Visitors look for a pet to adopt at the L.A. County animal shelter in Baldwin Park, one of the oldest and most overcrowded facilities, with the highest euthanasia rate.  (Luis Sinco / Los Angeles Times)

Dogs are kept in small, caged pens that have separate sleeping and exercise areas at the L.A. County animal shelter in Baldwin Park, one of the oldest and most overcrowded facilities, with the highest euthanasia rate.  (Luis Sinco / Los Angeles Times)