Thats terrible, but not the first time I have heard a similar story. Fortunately, any would be thieves would have to come through our garage to get to the garden, but it doesnt stop me worrying about someone breaking in. I heard of someone who left the house for only 15 minutes, and came back to find her champion stud dog had been stolen from the kitchen. Basically he was held to ransom, and the police were involved, but very scary for the owner.
Not sure if you mean the dog lost site?
http://www.doglost.co.uk/page.aspx?pg=72