Change in younger dogs behaviour

[Frrair]

Hi

I am after a bit of help as I don’t really know what’s happening.

We have two dogs.

First dog was adopted and has been with us 7+ years, adorable and friendly Corgi cross.

During the summer we adopted a second dog, a small collie cross bh who was introduced over a number of sessions. I reckon she is about 1 now and has been spayed. They have always been fine together they enjoy a bit of rough and tumble normally initiated by the younger running around then the older one starts the rough and tumble.

I have only seen them get angry once when some friends came round with two bones... Bob the older dog hid his and she went to find it and it got a bit growly.

All has been fine forever they sleep together, play together, go for walks together and even when the younger pushes in between Bob and the fire they just sit together.

When we are out or at night they have the kitchen and utility room with a dog flap to the back garden

Well all has been well until about 2.30am last night when an almighty scrap was happening in the garden, we thought they had a fight with a fox or something in the garden.

Today my wife came back from being out and there had clearly been a scrap in the kitchen the old one is all out of sorts and just wants cuddles, we put it down to perhaps a fox getting in the dog flap and there being a fight.

Just put them to bed in the kitchen and Bob looked pensive head down tail down closed the door and a few mins later a fight breaks out.

Bob now on the sofa in the lounge, bad dog in her bed.

Any ideas why a previous soft as a brush bh who looks to adore the older dog would suddenly turn on him?

Bit concerned now as we are all due to go out tomorrow and leave them together.. don’t know what might happen.

Any ideas welcome and positive advise please.

Thanks
Ed

[AW10]

I'm no dog whisperer but has the pecking order suddenly changed and older dog is no longer top dog? Younger dog is now stronger and no longer submissive?

[Jasandjules]

Keep them in separate rooms tomorrow.

Can you also know for sure who is starting it?

ETA - should say there are lots of questions:

Are they both spayed?
Have they both been checked for injury or ill health?
Is it always over food?
Is it a proper scrap or handbags?

Edited by Jasandjules on Thursday 31st January 19:03