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Sure, I've never seen anybody as loyal as them. My friend used to have a dog in their apartments, after one of their neighbors vacated the apartment to another apartment, He went back after 5 years to say hi, my friend's dog (Jerry) still recognized him, come and see the way she jumped at him.
He was so much excited to see that Jerry still recognised him despite such a long year interval.

Most of the children that were just learning to walk and talk before he left the place could not even recognize him, but she does.
They are wired with such a good memory.