SEVERE separation anxiety in puppy
Hi! My 3 month old puppy has been having some severe separation anxiety issues. From the time we got him at 8 weeks old, we have not been able to be out of his sight for one second without him going to the bathroom all over himself. It doesn't matter if we are gone for 2 minutes or 1 hour, he covers himself in his own poop. He is doing great with potty training otherwise. Let's us know when he needs let out during the day, throughout the night, etc. It is ONLY when we are away from him for any period of time. For example, he was in the crate for 7 minutes while I showered in the room across the hall and when I came back, he had poop all over his beautiful white fur, in his nose, on his lips, and covering every single bar of the crate.
We have tried EVERYTHING: a crate small enough where he can only turn around and lay down, plenty of toys and treats, covered the crate with a blanket, put a tshirt with our scent in the crate, left on calming music, exercised out all of his puppy energy, natural remedies such as Rescue Remedy, short periods of leaving and returning to let him know we will always come back. NOTHING works. The smaller crate leads to him being more covered in his own pee and poop, along with his toys and treats, any blankets, etc. What's even worse is that it doesn't matter if he has just gone to the bathroom outside, he will still go in the crate when left alone. One day, he went in his crate and within 15 minutes of being alone, a ton of poop was everywhere. We bathed him, cleaned his crate thoroughly, and put him back in it and within another 10 minutes he went AGAIN??
Like I said, he's a fantastic puppy. He is so smart and well-behaved in every other way. However, when we leave, he goes into full panic mode. It sounds like a panic attack and is truly heartbreaking.
PLEASE help with any suggestions you may have.