[NO BUG] bug when trying to sell "smaller" pet

I've had this a couple times. When I'm trying to sell, when my "bigger" (or older) pet doesn't qualify due to being worth $0 or less, but my smaller pet DOES qualify, it still does not allow me to sell my smaller pet. Is this a known bug?

I've attached a few examples.

Thanks in advance!

Pièces jointes

small pet problem 2 copy.jpg (70.7 Kio) Consulté 5672 fois

small pet problem1 copy.jpg (72.11 Kio) Consulté 5672 fois

your pets have a magical mutation that makes you pay to be able to sell it. I can easily imagine that you don't have this money
no bug

ok great! i did not know about that rule. thx very much!