Photogenic didn’t seem appropriate, so... ;’)
LOL!
OK...I did a little research (very little! LOL).
A “Charismatic Mammal” is a beast that people LIKE, and so is useful in promoting tourism, conservation, etc.
Examples would be Lions, Tigers, leopards, Elephants, Bears, etc.
Examples of non-charismatics would be poisonous snakes, maggots, rats, hyenas, dingos, bats, cockroaches, pigeons, jellyfish, and lice.