Hi all

Got a lovely Tibetan who’s 6 months old and up until recently has been brilliant on a night time but is now incredibly boisterous on an evening (mouthing, humping legs, grabbing at clothes), and has stopped sleeping in his crate through the night preferring to growl & bark between 2-4am, go up garden, return then fall asleep in living room (sometimes just falls asleep in living room).

I realize that he’s a puppy and has every chance of this being a phase as his adult teeth are coming in nicely but what do you chaps reckon?

Thanks.

incredibly boisterous on an evening (mouthing, humping legs, grabbing at clothes)

Commonly known as 'Puppy Zoomies'
quite normal and he will grow out of it, quite often involves jumping onto sofa, running along the back, bombing anyone sat there and generally going crazy.

Wait for others to advise on the overnight situation.

Can you not shut him in his crate overnight to stop this behaviour?

Well no because he’d be in his crate from 7pm till 5am (except the times he wants the garden).

He’s a funny dog at the moment, awesome but incredibly funny behavior

I would have him in a crate when you go to bed. So he isn't doing what he wants in the middle of the night

Cant help with the middle of the night thing, but when my boy was a pup evenings were always his "naughty time"!Fairly common I think.  Bear in mind too that he is fast aprouching the bratty teenager stage. Maybe try some brain games to help tire him out.

Night time I would just go for a solid routine.  Bed time, stay there, up in the morning.  If he needs a loo break then it's done on lead and all very boringly, so he cant take himself off an hoon around, then back to bed to sleep again.  You could try putting a radio on quietly in case he's hearing something and barking at that.

The evening thing is totally normal, and I haven't met a pup yet who doesn't do it!  I call it Witching Hour for puppies I wouldn't try to just stop it as such, but redirect that energy into chews, treat balls (good as the dog has to move to get the food), brain training (tricks, scentwork etc).