At the rate that you and your h continue to go round and round, nothing will be resolved concerning the assets. If you don't have a clue as to what something is worth, get on the phone and call someone (expert in the field). Send them whatever info you have on the time along w/a photo. When I was sure about a car, I checked the Blue Book stats and then phoned my insurance agent to see what they said it would be worth if it was totaled. Surely the boat is insured and you can inquire about that as well. You are going to have to take the bull by the horns and start getting some answers on your own. You cannot sit back and wait on him.
You two remind me of two little kids in the sandbox who both want the shovel and neither of you will give an inch. You are the only one that can stop this nonsense. How? By being proactive and start searching for answers on your own.
As for the dog, if you know that the dog is yours, then you need to start purchasing the dog food and either paying cash or paying w/your individual credit card. You two are separated...you both should have separated out your credit cards and bank accounts so that there is absolutely no reason to have questions about what was purchased on a card, etc.
I think you are in denial and burying your head in the sand, hoping that things will turn around like yesterday...they aren't! He's going for a divorce....wake up! You've got to start taking care of your finances and getting the stuff in the house in order and getting an idea of what things are worth. I don't see how you two will come to an agreement on what things are worth if you both continue w/the way the conversations are going.
You, and only you, are in control of yourself and how you react to what he says or does. What is going on now is a business deal that has gone sour and you need to put your "big girl panties" on and treat everything as a business deal. Yes, it's an emotional time for you, but leave the emotions on hold until you are off the phone and then scream, take a walk or beat the stuffings out of a pillow.
As I have suggested several times to you, have someone there w/you when he comes. That way, the conversations will not get out of hand about the funds, etc. Again, all discussions about monetary and assets should be directed to your lawyer, if appropriate. Don't allow yourself to get into tiffs w/him. He wants you spinning out of control so that you will give him whatever he wants. He knows that if he continues to do this, eventually you will give in. Step back, look at texts, but don't respond. So what if you don't respond asap, you are busy, you are not sitting on the phone. You were fired as his wife...let him stew for a good long while.
I'm sorry if I have been blunt about your situation...but the carnival ride needs to stop! Nothing is getting resolved w/this carnival ride.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
