I have had dogs all my life ( a very long time !!!) but I really have a problem now I have never dealt with before.
I have a rescue  adult dog ( bitch ) that was abandoned and very badly treated before because she is terrified of noise and her own shadow more or less. But she still insists on marking over every other dog smell.
When I first got her almost 5 months ago the weather was lovely so the doors were left open most of the time. We had a few accidents at first as I doubt she has ever been inside a house before, but I noticed she had to wee over every other dog wee, she insisted on being the last to wee.

Just lately since the weather has changed the doors are closed, but the dogs have a run 3 times a day, long run in the morning and evening and a short quick run at lunchtime, but if they need to go out at other times we are always there to let them out. My rescue will go outside when the door is open, however does not ask to go out if closed, so I have to keep an eye on her behaviour and let her out quickly as soon as she gets a bit fidgety.This is fine.

The last few days she has started weeing over every dog smell indoors, the dog beds, mats and even my daughter bed ( she left the bedroom door open )
I have trained puppies so many times with no problems, I have also had many many adult rescues, but never had one like this.
I scold her when I see her do it, but she is very secretive, so many puddles are found when it is too late to tell her, but if she is marking over the other dogs smells it is not normal accidents but it is instinct. How do I compete with instinct ?

Even though she is a scaredy cat she is still dominant with the other dogs, thank goodness they are so laid back they don't care about this. Sometimes she actually wees on 3 legs like a male. How do I stop this territory marking in the house.

my beagle cocks her leg too.  Not at all dominant though with other dogs.  She also marks in the house if she is left (and occasionally if the weather is bad and I am not in the room!)

Roxylola that really helps, perhaps it is a Beagle thing. The only problem is that I work in my daughters office in her house (next door to my house with shared garden and land ) in a family business. If she is going to mark ( my Beagle - not my daughter !!) then in my house it is my problem., however in my daughters house it is not acceptable especially as she has children. The dogs go to work with me and spend the day in the company of the other dogs so this is where the problems occur marking over the other dogs smells.
She is not really truly dominant over the other dogs, but she is more comfortable in the company of dogs rather than humans, and she tends to be a bit pushy with them and yet is scared of people.
I need to buy a new quilt for my daughter as even though she washed the wetted quilt it is still stained and some of her mats will never be the same, so this is something I really would like to stop if I can before I run out of money replacing things.

Haven't got any advice sadly but my girl is a big marker, as a pup on a walk she would pee once and that was it. Then she started sniffing a lot then peeing over where others had peeed, well at first it was peeing next to it as she would just pew where she was not she moves to per right on top.
Some times at flyball had and a male terrier have a peeing contest.
She hasn't done it inside yet but she will go toilet inside my friends house every time, she doesn't like her garden and will only pee out there if the other dogs are out there and she notices there peeing.

If she is doing tiny amounts of pee might be worth trying those bitch pants when you take her to your daughters. Save her floors.

Wonder if it could be her nerves, her trying to make the place smell more her then smelling of others?

Insecurity will cause dogs to mark.

My only suggestion is strict supervision, and when you can't actually watch her then confinement in a crate, to break the habit, and hopefully as she settles and gains confidence her need to do ti indoors will cease.

Getting cross with her when caught (unless in the act) will only make her more secretive.  She needs interrupting and marching outside

.

They are said to be notoriously difficult to house train.  The thing that helped mine most was getting a crate and a play pen for when I don't have eyes on her. 

As a hound I am not surprised she is happier with other dogs, mine is and she has never had any unpleasant experiences with humans

I remember well the days of standing out in the rain for hours on end while my girl sat under the patio table and refused to come out for a pee.

She was over a year old before she ever peed or pooped on a walk not matter that we were out for 2, 4 or 8 hours, even now she won't go on the lead unless she absolutely can't hold it.  It used to take months of walking in one place before she would happily toilet there.  She has got better but they do seem to be fnny about scent.  She will even only go in certain spots in my own garden!

Best I can suggest is either look at confining her when your eyes are not on her, might help her feel a bit more secure in her space and/or put some paper down where she tends to go.  (and keep her out of bedrooms, mine has wrecked 2 duvets that way)

Thanks for the advice. I have a large crate ( Lab size )  that would give her room to move if she wanted to as she isn't sick so I don't need to keep her still. The only thing stopping me is her past. As she has been used for breeding, most probably a PF she will have been kept in a cage or shed before being dumped or escaping ( not sure which ) I am concerned that caging her again may set her back and bring her fears out even worse than they are now.

I think the sensible thing to do is start her in a crate at night time in my bedroom, her usual place for bed, but leave the door open until she accepts and gets used to it. I don't want her to think that it is a punishment, but more a safe place to be.

This morning we were about to open the gate into the field for a run when someone fired a shotgun a long way away, but the pop pop scared her so much she ran back to my door, shaking like a leaf. When I opened the door she ran straight through to my bedroom and into her bed - her safe place. So maybe I can get her to love the crate as a safe place instead.
I will give it a try.

I think we have a pis*ing contest between her and my daughters male patterdale as I just caught him cocking his leg my dogs bed, just as she wees on his bed, oh don't you just love dogs !!!!! He is the leader in my daughters house and my Beagle has taken that role in my house, so that is why I think they are doing this to each other.
Anyone want 2 dogs ???

ps she doesn't wee on my bed or in my house now, only where the male Patt is next door

In some respects because of her past she might feel safe in a crate as she is used to being in one.  I would definitely go with the idea of putting her bed in there and leaving the door open.  Fingers crossed it works for you

Poor girl she hs had such a hard time at least now she has got somewhere she feels safe.  The only other thing as you say she is the dominant one in your house, does she want to be?  I tried to encourage my springer (from and 8 week pup) to respect mine as the older and therefore the boss and to be honest she is more stressed and worried and there were more squabbles when I pushed for this than when I allow the pup (now 2!) to take the lead. 

dominant one in your house, does she want to be?

I think she does, however there are no arguments but the others just let her get away with it, almost anything for a quiet life attitude. I have a Patt bitch 4 next week and a 10-11 year C Spaniel rescue, neither is interested in leading, in fact my daughters male patt was leader of the roost in both houses till Betty ( around 4 years old ) came along. I think this is why they both mark over the others smells. Thank goodness they don't fall out, just wee.....

They are such bright dogs but so sensitive too.  I love mine and wouldn't swap her for all the world no matter how she drives me crazy.  I think sometimes she is the ringleader really.  Certainly when I take her to day care she is so crafty at looking all chilled lying down when in reality she is gripping the floor with all four feet ready to go in any direction the second another dog goes to play.  And somehow she winds them up even lying down.  She never gets in trouble because she is not the instigator but really she is the one who stirs it all up.

she is so crafty at looking all chilled lying down

Absolutely, I love the way her head faces front away from the action, but her eyes are looking out the sides so she is watching without seeming to watch. Crafty little bugger. I adore her but just wish I could iron out the little flaws then she would be perfect in every way ( well in a beagle way, perfect recall - in her own time an hour later !!!) I have had so many breeds over the years but this is my first Beagle and I don't think I have ever known such a crafty, stubborn dog before that makes my heart smile every day.

Coming back is perfect recall in a beagle I think!  I have had a few other breeds over the years but never had one like her.  You are so right about her making your heart smile.  For all the times she bogs off and comes back when it suits and causes havoc at dog training and breaks in to my kitchen to eat the contents of my cupboards and freezer and pees in the corner because I took the other dog out for a training walk and jumps the fence to toilet in next doors garden ...  She is still my dog in a million and my heart sings every time she appears soaked to her skin with a grubby face and a slightly wild look licking her lips at the end of a walk.