Barry is 6 months, and yes habits can be learned. I'm pretty sure that Jovi's preference to pee only on blankets was learned. My son was living in a 35 foot motor home when he brought Jovi home and she would pee on his couch. We started putting pee pee pads covered with towels on it to try to keep this from happening, but instead we reinforced her to pee on the towels. Now that he's in his own home, she no longer jumps up on the couch and pees, but she still continues to only use the folded blankets or towels over the pee pads, just on the floor now.