It spends all day clinging to the trees in Amazon basin. It excretes once a week. It doesn't groom it's body.
It rarely leaves the tree it considers home.
It is the slowest animal on the planet.
Industrious though, I'd vote for honeybees.
They're literally " as busy as a bee ".
They travel miles to make a spoonful of honey.
They rarely sleep.
The stronger a light shines the darker are the shadows around it.
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease
Ants are the busiest animals, all the time collect food and carry them for long
"Time & Tides waits for none"
Non-violence is the greatest Dharma; So too is all righteous violence.
Service to mankind is service to God.
Laziest Animal is Sloth. They hang out to the trees most of the time. They never prefer to move from there. They do all activities there only. They sleep almost sleep 20 hours a day. I think on an average Kumbhakarna sleeps only 12 hours a day. They prefer to hang out there only.
The most industrious animal is Rabbit. They work very hard for their livelihood. They don't have the concept of family planning. Every year they deliver Kids. Each delivery they give birth to 3 to 5 kids. They struggle very hard to get food for these kids. They spend full time in arranging food to their kids.