I have had many people call and say "yes I want that animal. I will purchase it", then no money comes through the paypal. Or even worse they do it in person at a show hey hold this I want it, walk away and never come back. So really if you didn't immediately put money on the animal you where "wanting to purchase" the seller has no obligation to hold it. Unless there was a specific time fame in place. Like if the seller agreed to hold the animal for X days/hours.