I've only been able to get this to happen twice, but it seems that wild animals will attempt to walk through closed gates. I had a cougar trying to hunt a colonist, but instead of pathing around the open wall to his right, he was determined to go through the gate. I also had a grizzly get stuck on a gate seemingly trying to go to the other side, or at least I think he was because it was either that or he was very focused on looking at the gate. I can not reproduce this and I don't have the save where it originally happened.
I've only been able to get this to happen twice, but it seems that wild animals will attempt to walk through closed gates. I had a cougar trying to hunt a colonist, but instead of pathing around the open wall to his right, he was determined to go through the gate. I also had a grizzly get stuck on a gate seemingly trying to go to the other side, or at least I think he was because it was either that or he was very focused on looking at the gate. I can not reproduce this and I don't have the save where it originally happened.