As my 3.5 year old boar, Mochi's companion died, I got another 2-month old boar to keep him company. I was surprised when Mochi bonded with him immediately. He started grooming Hani(the new piggie), sniffing his butt, and following him around. He mounted him a couple a of times, but Hani didn't protest. I have never seen Mochi be this active with Koko(the piggie I lost). I realised that Koko and Mochi never bonded as much, but Mochi immediately bonded with Hani. I'm mourning Koko, but I still feel happy that Mochi has found a playmate, and Hani a home.