I can provide a screenshot if you'd like, but seeing as this was a glitch in my favor I don't think  need to. On this expedition, I'd placed a magic catcher, a bird catcher, and a mammal catcher. Only one of each.

"There's no one at Island.
There's no one at Heart of the Forest.
Your catcher saw how a Gryphon flew from the Old Ruins to Waterfall.
Your catcher saw how a Gryphon flew from the Western Fields to Waterfall.
Your Magic catcher caught a Gryphon at the Waterfall. See the pet.
Your Magic catcher caught a Gryphon at the Waterfall. See the pet."

And, I now have two more grypons! (#72002 and #72003). While it did take two liscenses, I don't think a single catcher is normally able to catch two pets.
 Is this a glitch? Do I have to relinquish one of the gryphons? Can I see their stats first?

my catcher was able to catch two pets, too.

May 13, 2013 19:04:40

Your catcher saw how a Dragon flew from the Island to Waterfall.
Your catcher saw how a Dragon flew from the Cave to Waterfall.
Your Reptile catcher caught a Dragon at the Waterfall. See the pet.
Your Reptile catcher caught a Dragon at the Waterfall. See the pet.
Your catcher saw how a Cockatrice came from the Creek to Magic Glade.
...

one is male, one female, the color sheme is the same, though

That's the same with my pets- I suspect that they're male and female copies of the same pet, but can't confirm for a day or two more.

Thanks for reporting.

It's not a bug, and the pets aren't copies. The catchers have ~10% chance to catch 2 pets at the same time if they are at the same location and have the same class.

ah, good to know, thank you.

due to the same colouring and the same markings i was not shure about it beeing a bug or not.

Awesome! That's so cool, I'm super happy now. Thanks for explaining!