Ours did the same, although only when someone came home or visited. It's cute at first but gets a bit annoying because you don't want pee indoors and it's not like you can make the puppy hold it if they're just too excited. Since for us it was when someone got home or just anyone entering the house and he hasn't seen in at least an hour...whoever was coming in, would open the door and let him run out to meet/greet, that way the pee spraying would be outside at least. You'd see little trails of pee on the concrete walkway haha. He did grow out of it eventually around 6 months or so.
Another thing we used to do was, if someone was coming home, they'd call whoever was home and they'd let the dog out before they'd get home. That way his bladder was empty enough that when he greeted the person, he wouldn't let out any pee. When he was younger tho, that didn't work as well.
I've heard people say to just ignore when getting home or when they're getting too excited and you think she's gonna do it. It's hard to do that because they're just so happy to see you. Or maybe just need to take her out more often so she doesn't have much left to sprinkle around.
She will definitely grow out of it but it may take some time. I always attribute it to them being so happy and it makes up for it
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