What is a mutation
1. a mistake in the production of dna
2. an error in the genetic code
3. a mistake that may cause a genetic disease
4. all of the above

Your dog can sniff at or even eat a bit of catnip. the herb is edible and not harmful. just don't expect them to roll around like a cat would! your dog may scrutinize catnip by licking and smelling at it, or be totally indifferent to this stimulant.