Are all Mutations harmful because creatures were designed?

Do you think the reason Creationist say "all mutations are harmful" is Because they believe everything was designed already adapted well and anything outside it would be harmful? However if this is the case it kind of destroys the "kind" idea (dog "kind" etc...) Does it not?

it does Because you claim that changes in an animal would be harmful.... but isn't that what your "kind" idea depends on? If you say its adaptation not Mutation.... your wrong, however yes it is adaptation. If something is different about a creature it is considered to be a mutation. Also I am still not sure exactly what "kind" is Because the only answer I get is "cat kind" "dog kind" etc... Although I get what you are saying there many creatures do not fit into a nice box like that.