Can you love your dogs too much?

I love my Boudreaux and Pierre as much as if they were my kids. When I am gone... and leave them home alone... I feel like a guilty mother. I worry if they miss me. I worry if they are okay. My partner tells me that Dogs have no concept of time... and that they will be just as happy to see me in one day as in 7 days. Could this be true?

I have a close relationship with my dogs. They are probably the best thing to ever have happened to me. I have two beings that love me unconditionally... no matter what. I have a responsibility for the welfare of two very special beings. I like that responsibility. I like being "Daddy".