Such cooperative behaviors have sometimes been seen as arguments for leftwing politics such by the Russian zoologist and anarchist Peter Kropotkin in his 1902 book Mutual Aid A Factor of Evolution and Peter Singer in his book A Darwinian Left
"प्राण्यांमध्ये अश्या परार्थी वर्तनाचा अग्रह रशियन प्राणीजीवशास्त्रज्ञ आणि अराज्यवादी पीटर क्रोपोत्कीन ह्यांच्या १९०२ सालच्या ""Mutual Aid: A Factor of Evolution"" ह्या पुस्तकात सर्वप्रथम प्रकाशित झाला."