My puppy jack russel just pee in the backyard
I have a 5 month old Jack Russel puppy, who has been already housetrained, he always signs when he wants to go out to the backyard, but if I take him for a walk to the park or just to the streets he never pee, he rather keeps it back and wait until we arrive home and his first thing to do to go out to the backyard and arrange his things.
I tried that when he woke up at 8 o'clock I didn't let him to the backyard I rather went out with him to the park -as at the morning he is always in need- so I thought he could not keep it back but he could. I was outside with him 3 hours, he was really nervous, confused, was walking higgedly-piggedly, but he didn't release on himself. After 3 hours finally he pooed but didn't peed. He was really really scared during this 3 hours, so I don't know whether it's a good idea to do this again or it's better to wait.
Maybe he is too young and if he gets older he will know it?
I don't understand why he can't dare to do it outside.
If anybody has any idea what can be the reason for this please write me.