It's not the most glamorous job - feeding, washing, walking and cleaning up after forgotten and unwanted pets.
Yet many invest hundreds of hours into caring for the vulnerable creatures at SPCAs around the country.
SPCA New Zealand chief executive Andrea Midgen said they have 5000 volunteers across the country - that's 10 volunteers for every paid staff member.
"We simply couldn't do the work that we do without the help of our amazing volunteers. They are the heart of the SPCA, and we rely so heavily on these in all areas of our organisation.
"We are very fortunate to have a range of volunteers from all areas of New Zealand and different stages of life."