Why Is My Dog Suddenly Becoming Aggressive?

We have 3 dogs. A 1 1/2 y.o Australian Cattle Dog mix, a 1 1/2 y.o. Beagle mix and a 4 y.o. cockapoo. Up until about 3 weeks ago they all stayed outside during the day and came in at night. The Cockapoo is going blind so we now have her in the house all day. The problem is that the Aussie is starting to get agressive with the Cockapoo when she is let into the house.(She doesn’t do anything when the Cockapoo is let outside) She has also growled and snapped at my daughter twice now. I can’t think of anything that has changed other than having the Cockapoo in the house all day. Could it be jealousy? Any training suggestions?

philippines travel agency

Why Is My Dog Suddenly Peeing Where He Knows Not To??

My 3 year old cockapoo Bailey is starting to pee on my bed, and I dont mean just a sprinkle, he pees through the blankets, sheets, and even makes it onto my pillows. He has never done this before, he is trained to pee outside, so why the sudden change? His diet is the same, he has allergies so he is on medication, but its the same meds as always, we don’t have any other animals so I don’t see how it could be a dominance issue. This is just really odd behavior. Why is it happening, and how can I stop it?

Why Would My Dog Suddenly Try To Attack Another Dog When He Has Never Done That Before?

We were at Petco with our dogs (6.5 mth olds Pepper-cockapoo, and Bandit-lab/pit mix) walking around enjoying ourselves when we go to turn down an isle and there is a man with a full blooded brindle pit bull and a smaller baby pit bull in a buggy. The man’s pit bull sees and and tries to head down the isle towards us. He wasn’t growling or barking or anything. He was just pulling his master trying to get down the isle.
Bandit (lab/pit mix) suddenly puts the hair up on his back and starts growling and showing his teeth. He was very agressive and he isn’t like that. We have been to Petco before with him. He takes training there every Tuesday. There is even an agressive Rotweiller in our class and he isn’t even that way with him. He has been around other dogs outside of Petco. We have an older pit bull down the road, 2 austrailian shepherds, and a border collie, and he has never been agressive with any of them.
He has been food agressive at home, but only with Pepper, never us. But then he and Pepper will share the same water bowl at the same time and he doesn’t have any problem with that.
We immediately pulled him away from the situation and scolded him. I have never seen him act that way to another dog. So does anyone have any ideas what could have been going through his little (well, not so little since he does weigh 45 lbs) mind when that happened? I would appreciate any help or suggestions.