The group began as the SPCA in 1824. Since then, it has inspired the creation of similar, but independent organisations in other regions:
ð ə WORD_BOUNDARY ɡ ɹ uː p WORD_BOUNDARY b ɪ ɡ æ n WORD_BOUNDARY æ z WORD_BOUNDARY ð ɪ WORD_BOUNDARY ɛ s p iː s iː eɪ WORD_BOUNDARY ɪ n WORD_BOUNDARY w ʌ n WORD_BOUNDARY θ aʊ z ə n d WORD_BOUNDARY eɪ t h ʌ n d ɹ ɪ d WORD_BOUNDARY t w ɛ n t i WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY s ɪ n s WORD_BOUNDARY ð ɛ n WORD_BOUNDARY ɪ t WORD_BOUNDARY h ʌ z WORD_BOUNDARY ɪ n s p aɪ ə ɹ d WORD_BOUNDARY ð ə WORD_BOUNDARY k ɹ iː eɪ ʃ ə n WORD_BOUNDARY ʌ v WORD_BOUNDARY s ɪ m ɪ l ə ɹ WORD_BOUNDARY b ʌ t WORD_BOUNDARY ɪ n d ɪ p ɛ n d ə n t WORD_BOUNDARY ɔ ɹ ɡ ʌ n ə z eɪ ʃ ə n z WORD_BOUNDARY ɪ n WORD_BOUNDARY ʌ ð ə ɹ WORD_BOUNDARY ɹ iː d̠ʒ ə n z WORD_BOUNDARY