Holly can't do beg yet and she's only 5.7kg (~12.5 pounds).
I was trying to teach her but she needs to put her front paws on my hand (once she figured out I didn't want her to stand right up on her feet), so now I click when I remove my hand and she stays up for a second.
I think maybe part of the problem is her age, maybe she doesn't have good stomach muscles yet and I don't want to make her practice it too often.
Although maybe it is her shape too. She is a bit pug-shaped so she has reasonably broad shoulders and chest so maybe that makes it harder. Although I have seen Pugs on youtube doing beg (but they usually have a fatter stomach than Holly so maybe that stomach helps them stay up
) .
I think Holly will eventually get it, it's just going to take a while.
I also want to teach her to do handstands when she is an adult (I'm sure I've read that this is best left until they are adult and finished growing), maybe next year