It could be due to you having left the house , Its said that if a dog frets when you leave it thinks your in its care and therefore its a bit like being in charge of a child that leaves the house and you cant leave also to find where its gone so he is panicing . try making no fuss when you leave dont even fuss him and tell him you ,l be back soon , he needs to understand that its your choice to leave the house and he has no reason to question that . and then when you arrive back home try not to fuss him imediately as this gives him a signal that he is the top dog as you greet him first before anyone else . Start by practicing leaving the house as normal , leave it 5 mins and come back in , dont speak or give him eye contact then after 5 mins reward him and fuss him , do this again leaving it 10 mins and so on each time you leave do so without making a fuss talking to him or giving him eye contact the same on returning , untill you call him and fuss him after 5 mins . it should desensitise him to you leaving the house as he will see you leaving as a possitive thing as he will get to learn that on your arrival he will be rewarded .

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