I absolutely love both Mango and Tango, but the bond I have with Mango in particular is so special that I consider her my heart rat. She seeks me out even during free range time, and when she's in her cage, she gently tugs on my fingers or clothing as if to pull me in there with her. The cage is in my bedroom, and the second she hears me wake up, she scurries to the front of her cage to wish me good morning. She comes to the sound of her name and has taken to grooming me like she would another rat, and even takes naps on my chest (she loves sleeping under my shirt!). Tango is amazing as well of course - but she's just such a lively, independent, goof ball that the bond I have formed with her is quite different..