What has happened to my lovely puppy?

The last few days Poppy has been a nightmare, total nightmare, she is hyper, biting at everything and everyone, does not settle for cuddles like she use too, hates going for walks and has started to bark at people.

She is now 4 months and i dont know if this is normal at this age or not, she is spending more time in her crate than out at the min as she cant behave when out.

Completely normal, they get comfortable and see how far they can push the boundaries. Stick to the training, routines, treat her as you did as an ignorant pup, stick with it and the results are well worth it. Merry Xmas xx

Thanks, Happy Xmas xx

All totally normal puppy play merry Xmas xx

very normal, they go through so many stages when they are growing up. expect a few more pretty much up untill 18 months when they start to stabalize.
she is also coming up to the point where she will start to loose her baby teath if she hasnt already so she may have a sore mouth and an incredible need to chew.
I read a good article by Stan Rawlinson who suggests from 4 months to 8 they will go through a period of play instinct and flight instinct. sounds too me that she may well be going through the play instinct.

We are having to go back to basics with sasha too, she's 8 months now and a temperamental teenager stage, only another 9 months to go until she settles hopefully !!!!