The Dryad’s Saddle fungus is one I remember from my childhood. It can grow huge.
It has a beautiful scaly skin and soft coloured underbelly.
It’s easily big enough to saddle a horse.
Speaking of horses, here are two pretenders; Dartmoor ponies with attitude. Their fight was prolonged and included kicks and bites. Here’s one getting its lip bitten.
Pets, they are most definitely not.