My sister's dog, Loki has become like our second dog. We take him on hikes with us and he stays at our house once or twice a week. Such a fun dog! He and Indi are around the same age and get along so well. They have similar energy and play styles. He doesn't have that "space bubble" like I've noticed in a lot of border collies, (at least not when it comes to playing with other dogs). He doesn't mind being moosed around by Indigo, who is much larger than him. My sister has problems with him growling when she moves in bed and disturbs him!
Today we took them for a run by the Boise river.
They run and chase and wrestle.
Indi jumped into the river. It didn't seem to phase her (it is VERY cold in January!).