Well, you know what to do:
Get a newspaper and roll it up tight. Hold it in your hand and take good aim. Make sure you hit your forehead right square in the middle while saying, "Bad owner! Bad owner! I should have been watching my puppy
OK. Four-month-old puppies are not only the cutest beings on the planet but the most energetic, most mouthy ("Gee, what *else
* can I get into my mouth?"), and most curious. Kind of like a 2-year-old toddler, but with even more
mobility and lots of very sharp teeth.
That's one reason they're sometimes referred to as "land sharks."
Seriously, though, both human toddlers *and* puppies explore the world with their mouths. That's why so many toy packages say "Not for children under 3 years of age"; there's a likelihood that small parts may be swallowed while tasting or otherwise testing them.
If you don't already have one, might I suggest an [url=https://www.petedge.com/product/Home-Kennel/Cages-Crates/Exercise-Pens/Easy-Ex-Pen/pc/194/c/310/sc/381/56526.uts]exercise pen[/url]? Most often referred to by dog people as an "ex pen," this is a kind of portable fence that can be put up and taken down in a matter of seconds. Purchase the size suitable for the grown dog; that way, Puppy will always consider the ex pen "too big" to jump over. They come in various heights, from 18" or so to 48". My ex pens (I have two) are 42" high and are the standard eight-panel variety.
Ex pens come in handy when you need to take Puppy somewhere with you (your parents' home, maybe?) and the residents are understandably hesitant about an untrained animal in their home or in their yard, but Puppy is too young to be left alone or needs the socialization with additional people/their pets. His bed, toys, and water can remain in the ex pen with him, and a leash fastened to the side of the ex pen for controlled entry and exit to and from the ex pen.
I'm sorry about the destroyed garden. The lettuce and dirt on Puppy sound like good evidence of Who Done It to me, too! But I'm so glad there was nothing unhealthy for her to get into. *whew* If she's like my dogs, she'll just love watching you work outdoors from the safety of her ex pen; just be sure to keep her on a [url=https://www.petedge.com/product/Training-Control/Collars-Restraints/Training-Collars-Leads/Guardian-Gear-Cotton-Web-Dog-Training-Leads/pc/196/c/305/sc/323/46863.uts]long line[/url] (I suggest the 15-foot length) when you let her out to play until you get a permanent fence installed. Vergil was very fond of just-picked tomatoes. *wistful sigh*
Enjoy your puppy and take lots of photos; she won't be this cute for long! You can plant another garden, but you can't make your puppy four months old again. And just keep telling yourself: "She doesn't know better. I'm the human here." etc.
(Can you tell I've been through this a couple of times? Oh, yeah.
Sunset Zone 17, USDA Zone 9