My apologies for the delay
The marriage is a short to medium length one which produced no children - although the needs of your two children will be a factor in any settlement.
the substantial difference in your incomes means that spouse maintenance is a very real possibility - although for a limited period - two or three years at most.
There are limited assets which have arisen from the marriage - but you have extensive assets in the form of the buy to lets.
The marriage has been a high spending one - with your wife bringing in £30,000 and you maybe £36,000.
The only current assets amount to £20,000.
It is likely that the Court will take into account the fact that you have the properties and award the few assets that there are to your wife - which may mean no spouse maintennace if you are lucky.
The dog is hers and will not be something the court would be happy if you tried to argue about it
Please remember that I can only give you a rough guide
Please ask if you need further details