Hiking refers to a long vigorous walk, do you like to hike?
I like to hike every now and then.
Very cool, hiking is the perferred term for the exercise in the United States and Canada.
thats good to know.
Yeah actually, in the United Kingdom and England walking is the acceptable term that means the same thing as hiking.
i like to walk in the evenings with my dog Spike.
Do you mean just short walks or long hikes? In australia the term bushwalking refers to the same thing as hiking. 
short 1 hour walks around the neighborhood. 
Ah that makes sense, yeah so just a walk. It is amazing how many different words they are for the same thing. In New Zealand it is called tramping.