My 18 month Border Collie X Lab has started to jump our 1.5 metre fence. I had him desexed as I thought he may be roaming because of other dogs being on heat. This has not stopped him. Any suggestions. My daughter has recently brought a 11 week old Chihuahua X Pom. Our two dogs play wonderfully together and our Border Collie X is very gentle with our Chihuahua. I have noticed though that our new puppy has begun to eat her own poo, what is the reason for this, should I be concerned. thanks Annette