灵感来源：
[1]刘文利(2015)。《珍爱生命—小学生性健康教育读本》(五年级下册)。北京:北京师范大学出版社。
胎儿被观测到自慰：
[2]Giorgi G & Siccardi M.(1996).Ultrasonographic observation of a female fetus' sexual behavior in utero.. American journal of obstetrics and gynecology(3 Pt 1),.
许多动物，不论雌雄，都会在有伴侣的情况下自慰：
[3]Fowler M.E..(1979).Artificial breeding of non-domestic animals: Watson, P.F. (ed.): Symposium 43, of the Zoological Society of London. London & N.Y., Academic Press. 1978. Price: 16 pounds (British). (2),. doi:10.1016/0093-691X(79)90016-5.
[4]Balcombe Jonathan Peter(2019).The Exultant Ark:A Pictorial Tour of Animal Pleasure. University of California Press.
牛牛自慰：
[5]P. Perumal et al. (2013). Spontaneous Erection and Masturbation in Mithun ( Bos frontalis ) Bulls. International journal of Bio-resource and Stress Management, 4(4), pp. 645-647.
猫猫自慰：
[6]Schwartz S.(1999).Use of cyproheptadine to control urine spraying in a castrated male domestic cat. Journal of the American Veterinary Medical Association(4).
松鼠自慰：
[7]Jane M. Waterman. (2010). The Adaptive Function of Masturbation in a Promiscuous African Ground Squirrel. PLOS ONE, 5(9).
鹿鹿自慰：
[8]Marchinton, R. Larry; Moore, W. Gerald (1971). "Auto-Erotic Behavior in Male White-Tailed Deer". Journal of Mammalogy. 52 (3): 616–617. doi:10.2307/1378600. JSTOR 1378600.
[9]Leonard Lee Rue III (2004). The Deer of North America. .Globe Pequot Press. ISBN 978-1-59228-465-8
[10]Leonard Lee Rue, III (2001). The Deer Hunter's Illustrated Dictionary: Full Explanations of More Than 600 Terms and Phrases Used by Deer Hunters Past and Present. Globe Pequot Press. ISBN 978-1-58574-349-0.
已婚男女自慰就自慰呗！别害“修”！
[11]Coon, Dennis; Mitterer, John O. (1 January 2014). Psychology: Modules for Active Learning. Cengage Learning. p. 406. ISBN 978-1-305-16173-3.