Use the cheat table from this post. It has everything you need including setting the pet skill level.
viewtopic.php?p=144245#p144245
Be careful, though. Don't adjust the pet skill level to max on your first small pet. Because when it gets to adulthood with max skill level. It will screw up the leaderboard for the fetch fest in Summer. The leaderboard takes your pet skill level when it grows up, and adjust the leaderboard. You'll be looking at beating 1000 m of disc throw. The max you can do is less than 100 m.
Keep your first pet skill level at default until it grows up, then you can change the skill level. It's best to do this before the fetch fest just in case it got screwed up. You can check my previous post about this.
Spoiler
I got my pet to become adult early in first year Spring in time for the fetch fest. But for some reason there are weird things.
1. When I throw the disc, sometimes my pet doesn't move to catch it. Nothing else I can do but to force shut down the game.
2.The leaderboard for the fetch fest makes it impossible to win since the leader is at 132.1 metres. And the best I can do on max throw is 80 metres (on a full pet stat bar). And someone threw a disc to have their pet catch it 1 km away??:
EDIT: I found the issue for the leaderboard. If you set your pet to have max fetching skill, when your pet grow up, it'll screw the leaderboard. Apparently the leaderboard scales according to the skill of your pet at the point of growing up. (with some overfow from the looks of it).
I fixed the leaderboard by setting my pet skill back to 0 when it grows up. And checking the leaderboard looks normal now. Just set it back to 255 before you enter the fetch fest, and you should have full green bar in during the minigame, but the leaderboard is easy enough to beat.
I'm still having the issue with the first point. But it looks like by throwing the disc about 10% power would solve the issue. It only occurs during the first throw, the second throw is fine as long as you keep within the green zone.
How to use this cheat table?
- Install Cheat Engine
- Double-click the .CT file in order to open it.
- Click the PC icon in Cheat Engine in order to select the game process.
- Keep the list.
- Activate the trainer options by checking boxes or setting values from 0 to 1