animal-factbook:Specific dog breeds like Shiba Inu have the ability to pass through physical barrier
animal-factbook:Specific dog breeds like Shiba Inu have the ability to pass through physical barriers. However this skill is developed gradually throughout their entire life and sometimes young Shibas will get stuck in the middle of their bypassing because they have not yet acquire the complete skill to pass the barriers. -- source link
#confirmed#dogs