From those drawings I did a number of etchings and finally a 4'x6' painting of SamSam, which is still hanging in my parents house. I think it's my most successful painting.
While doing this drawing ( steel pen only , no pencil ) I Googled SamSam to find out what had happened to him. There's a thing called the Gorilla Studbook, which gives details of each of these animals lives.
This is SamSam's entry
I wasn't expecting to be quite so sad out this.