Dog jumped fence...but appeared

 I think its a good thing, for sure that he stayed put, and that you didn't scold him.  You're right, he would have had no idea what you were mad about, and likely would have misinterpreted it with coming back.

As for the fence jumping, and what to do to prevent further occurances, aside from some training, and raising the fence to a greater height, there isn't too much you can do.  Well besides supervision at all times.

You could try spanning the top of the fence with a piece of PVC pipe coated in oil.  But that will only work if he's pulling himself over the fence.  If he's clearing it, he won't even get greasy paws.  You could also extend the fence with Lattice which you can pick up for about $10 for a 4X8 sheet.  Not super pretty though.

Just as a precaution, I'd try to somehow either prevent his access to that part of the fence, or put something on top to keep him from being able to jump. This is especially important if your neighbor has a tortoise. Dogs can do some horrible damage to tortoises and, as a tortoise owner, (and also someone who has seen the life threatening damage first hand to clients' tortoises through work) I'm a bit extra worried about that kind of thing

We did block off that area with 4' wire gauge fencing creating a 2nd fence about 3-4' in front of the main fence at the lowest point, he's stopping short of that fence now when he's on his *nut runs*....no more jumping episodes as of today.

Tomorrow we agreed to screw a few green metal posts to the posts of the split rail and add another 2' section of green wire gauge above the 4' fence...it's only on the side near the house were I'm sure he got out, not too much work there to do.

The remaining yard is sloped in a way that makes the split rail have the upper height versus the path of the yard, so I think we're ok there.

Funny enough, this is the section of fencing we wanted to replace first...will get started on buying materials.

So far so good....some areas of fencing needed reinforcement anyways, so in a way it's good he did what he did to make us double check the whole acre. Most of this split rail is getting so old, that's what most of the problem is.

Poor baby...at least he did sit his butt down in front of your gate.  And, I'm sure he was confused about being on that side.  I'm glad you didn't make issue of it with him.  That would have confused him further.

I'm sure you'll be all right, with a bit of extra supervision and vocal corrections when he shows interest in the area.  Followed by praise and play to show him how great it is in his own yard.  No need to venture, he'll say. 

One time, when Cody (rip) and Buddy dug out to find adventures I knew they were gone and it was a very scary thing.  But not too long after discovering they were gone, Cody found her way back into the yard and went to her favorite spot.  But, Buddy for whatever reason didn't follow suit...and I found him sitting at the front gate with that look of I'm locked out....let me in.  What can you do at that point...can't correct him at that point...he just wants to come back home where its safe.  The fun had worn off.  We resolved the digging issue.

We also have a 4 ft fence and having an irish setter that are known to jump fences we were concerned about it and wanted to address it before he figures out he can do it.  I looked into fence extensions.  Which gave me good ideas for a cheaper alternative to a new fence.  I spent tons on this nice wood one and didn't consider a tear down!  We found this decent 2 ft wooden garden like fencing at the home improvement garden center.  My husband was able to attach it to our existing wood fence which basically made it a 6 foot tall one.  It isn't the most attractive alternative indeed, but it served the purpose and saved us a bundle. It is a basket weave design which gave us the height without it becoming a fortress appearance.