I read it as a 'smiley' comment, but, after thinking about it I chose to take the opportunity to explain to the OP that one the exposure would be amply suitable for rendering good detail in both of the dogs.
*
haha!
WW
PS the info about which lens Sandra is using was useful to me. It goes to AF speed: the L IS MkII is super-duper fast; it is the fastest of the three Canon 70 to 200 F/2.8L lenses and it is really good for tracking fast moving stuff.
bye for now - gotta go to bed