So my boston terrier is 4 yrs old. She used to chew and scratch large holes in the walls when she was younger and then stopped. Well all of a sudden she started making holes in the walls again, only this time in my new house! Nothing in her life has recently changed except that I'm 14 wks pregnant (and she's only been doing the holes again for about 1 week). We moved here almost a year ago, so its not a new environment, she's still getting tons of attention and exercise. She only does it when I leave her home with my other 2 dogs (they have their own room all together for when I'm not home). Otherwise shes an angel, but has always been EXTREMELY attached to me. She won't even let someone other than me hold her leash and I'm not allowed to close the bathroom door or she moans like a baby. I have tried crating her and this causes her extreme stress, so its not really an option... What would cause this, separation anxiety, vitamen problems, my pregnancy?