1. When viewing a property, do not assume that your dog is also welcome to come in with you. I understand that your dog will need to like the home you are buying and might have an opinion, but maybe you know him well enough by now to figure out his preference. Or take photos and show them to him later. Take a picture of my cats, while you are at it, so you can explain why he couldn't come in.
2. If you are arranging to view a property, please at least take a look at the estate agent's details first. Yes, it only has two bedrooms and one bathroom. Maybe even look at a map to see if the house is in an area you are willing to move to -- yes, this one IS rather close to the railway tracks, which shouldn't have come as a surprise. Price may be negotiable. Size and location are generally pretty well fixed. Please just consider that the homeowner is preparing for each viewing, and if there isn't even the remotest chance that you are going to be interested, it is rude to put them to the trouble.