[DanBC]

Not sure if it happens at Toronto, but some places sell "adoptions" which help pay for keeping the animals.

And some people respond more strongly to the cutesy names, which may increase the amount of education they get from the zoo.

http://www.monkeyworld.org/primate-adoptions

[NickHaflinger]

Take a look at 'David Attenborough .. Life on Earth' https://www.youtube.com/watch?v=czgc56Vfz4w