I think it depends.
I spend more time on my tanks than my Lab.
With the dog, throw some water and kibble in a bowl, pat on the head and you're done.
With tanks, there is much more to do.
I've never tested the specific gravity, temperature, or calcium level of my dog's water.
Having said that, yes you can ignore your tank for a day or two if you need to, with a dog, not so.
It's all relative.