I have a puppy dog called Otavio and my favorite moment with him happened some months ago. We used to go to a small park near our house, was one of the first outside places which I introduce to him. There, I used tried to walk with Otavio without leash, introduce him to another dogs (this part has been really hard, Otavio is a bit antisocial haha), play with with him using balls and sticks, etc. In this specific day, was our third or fourth visit to this place, I took off the leash and left Otavio walk free with me, as always. There is a small lake in this park - just for decoration, not is deep - and Otavio never noticed this thing, every time he just walked near. But in this day, while we walked calmly, he stopped, smelled the water, looked to me - as he says: "sorry mommy" - and jumped in the lake. In the first seconds I forgot completely about animals instincts and that the lake was not deep, I just thought "my baby, a dog from apartment, he never ever swimming" and started scream "Otavio, come back, please be careful!!!". All this happened in something like five seconds and when I realized the situation, everyone in that place was looking to me and laughing... I started laugh too and, after played a bit more in the water, Otavio came back to me veeeeery happy. After that, I introduce the beach to Otavio and we tried to go sometimes to play in the water. For now only with leash, because he was a very crazy dog and I´m a very worried person, but anyway it has been an amazing experience for both of us.