Animals Wildlife Going Steady: 10 Animals More Monogamous Than Us (Slideshow) By Mairi Beautyman is a writer and content strategist based in Berlin. She writes about design, architecture, travel and sustainability. our editorial process Mairi Beautyman Updated October 11, 2018 Migrated Image Share Twitter Pinterest Email Animals Wildlife Pets Animal Rights Endangered Species Photo by Joel Sartore via National Geographic Ah love. Woody Allen has some nice thoughts on this tricky thing that perhaps gets more thought around Valentine's Day. The recent swan divorce shocked us to the core, so we decided to ponder the happy couples in the animal kingdom...as well as two happy cheaters. "Of the roughly 5,000 species of mammals, only 3 to 5 percent are known to form lifelong pair bonds," reports MSNBC. For the sake of maternal cuteness, let's start with the serial monogamous wolf.