This 3rd story i trying to remember who is the practitioner but i couldnt
maybe someone who knows abt tibetan buddhism can tell me

The sick dog who is maitreya
Naropa was practising the teachings of Maitreya .He have tried to seek Maitreya to come down to ascertain his level of practice,but there is no sign.
Naropa was patient and meditated and practice in cave for 5 years,hoping Bodhisattva Maitreya will come in person .Throughout the five years, he waited and practise the 6 paramitas .
after the 5 years of patient waiting at his meditation caves, Naropa was restless ,and decided to go out on his journey of practise
He chanced upon a sick dog on the roadside who have open wounds and a leech have been biting at the open wounds .
Unbearable at the suffering of the dog, he decided to use his tongue to rest on the dogs wound ,allowing the leech to climb up and placed it gently in the grasses. seeing it is unable to stand ,Naropa carried the dog by its shoulder
as he walk past people ,many saw it is a sick dog .
After a distance ,he put the dog down .
Suddenly ,the dog transformed into Maitreya Bodhisattva
Naropa prostrate and ask "Oh my Guru , Why have u not answered my calling for you for 5 years?"
"Naropa, I have .In fact I am always with you .Just that you did not invoke compassion in your practice .So my transformation as a dog is to test your compassion for sentient beings."
Naropa understood the meaning .
We need Wisdom and Compassion to complete our practice