Can touch as long dog not dirty or wet.

just use water mix with soil for cleaning.

usually muslims who keep dog as pets dont bring it in areas where he pray, usually in prayer room dog cannot come in.

the thing is its best not keep dog as pet if not necessary, because the issue arise when it comes to pray, if the house have dogs walking around it is not clean due to dog hair and saliva.

so that is why most muslim preferred not to keep dogs