Five new Australia Post stamps have been released to celebrate 150 years of the Royal Society for the Prevention of Cruelty to Animals.
The five stamps represent the RSPCA's mission and practice: research, shelter, protection, certification and advocacy.
The RSPCA's history in Australia dates back to a public meeting to discuss the ill treatment of horses in Victoria in 1871.
Australia Post Group Manager Philatelic Michael Zsolt said the RSPCA deserves to be celebrated for their tireless work towards preventing animal cruelty.
"The RSPCA's long history of advocating for animal welfare issues is something all Australians are proud of," Mr Zsolt said.
"The stamp designs really show the breadth of the RSPCA's work across companion animals, farm animals, animals in sport, recreation and industry, and wildlife.
RSPCA Australia Chief Executive Officer Richard Mussell said the stamps were a fitting addition to the 150th anniversary commemorations.
"It's wonderful to see the RSPCA's work over many years acknowledged in this way by Australia Post," Mr Mussell said.
"These stamps are a wonderful opportunity to reflect on our great breadth of work and what has been achieved in what is an important milestone year for us."
The stamps and associated products, including a minisheet, stamp pack, first day cover and maxicard set, are on sale at participating Post Offices, via mail order on 1800 331 794, and online while stocks last.
For more information visit: auspost.com.au/stamps or australiapostcollectables.com.au