Puppy keeps humping her bed

[uhtredsonofuhtred]

Any ideas why she's doing this? She doesn't do it to her teddy's just her bed.
Is this normal 

Perfectly normal. Mine still does it to her drying towel if it gets bunched under her belly. And when she was on heat no toy was safe from a ferocious humping. She is being spayed soon, which will probably stop it. Just ignore and distract, it's just youthful rampant hormones!

Thank you, I've had female puppies before and never known them to hump at 16 weeks old, but then she's a whole lotta different to my others