My daughter has a bullmastiff bitch who is almost 5 years old.she has always been a very friendly lovely natured dog,she had always lived in the same house since my daughter got her as a pup.she has never been destructive ar aggressive but since my daughter moved house 3 weeks ago she seems to be acting strangely. she was ok the first 2 weeks of moving but this last week sheis acting strange and my daughter is getting a bit worried. the dog is very jumpy and nervous if she takes her out for a walk. she is getting things out from the shelfs or under the coffee table etc and demolishing them.if she leaves her for a while.also she growled at someone as they walked by in the street.and she has never done any of these things before.its as if her whole personallity has changed.nextdoor have got 5 cats and they wind her up as she has never really had contact with cats.could that be part of the problem aswell as it all being strange. thanks for any advice

she's unsettled - give her time and treat her as normal :)

It's a very unsettling time when you move house. Everything is new and has to be adjusted to. It's also alleged to be one of the most stressful times for people.
Dogs can be very sensitive and pick up on peoples moods and changed atmospheres - together with unfamiliar surroundings this can be a major hurdle for some dogs to cope with and some find it upsetting.
Sometimes owners can encourage this nervous behaviour by realising that something is wrong and comforting the dog by paying it attention when they sense the dog is upset. Then when it settles they think it's ok and carry on bustling about unpacking etc.. whatever but ignoring the dog causing the dog to be stressed.
As much as possible try to reduce any triggers that are seen to be causing this behaviour and get things back into the old familiar routines as quickly as possible.
The cats could have some part in her distress at the moment. They may well have had the run of your garden as well and left their scent everywhere which she'll be finding unfamiliar.
Try to ignore her as much as possible when she's anxious and spend some quality time with her when she's being good. Give her a reward or take time out to give her a gentle massaging groom to chill her out :)
Lara x