. >> reporter: whenever sherry franklin feels a little overwhelmed, all she has to do is go nose to nose with one of her 92 dogs. within seconds, she is a slobbered with reassurance. >> when i bring home one of these dogs, they are incredibly grateful. >> 15 years ago after volunteering at an animal shelter, she noticed all the senior dogs were being passed over. >> some of them got euthanized just because they weren't getting adopted. >> reporter: so she decided to open her very own risk you called muttville, specifically tailored to man's oldest friend. since then, she has saved more than 10,000 of san francisco's most scraggly and grateful pooches. >> so soulful and so cuddly. >> reporter: even though she is at full capacity, today she is taking into more dogs. >> it's hard for us to take a breath. >> reporter: shelters are scrambling to accommodate an unprecedented influx of dogs coming through their doors, with some considering euthanasia for the first time in years. katie jones is the rescue coordinator at the san francisco animal care and control, which only uses euthanasia for ex