There are a number of them and here are several:
I wouldn't include Vampire Bats on the list. Video footage shows that they incise wounds on their victims and lap up the blood rather than suck it up.
leech butterfly and moth
An octopus
dogs
Grass
Animals around the area. You could list them all you have to learn for yourself suck in sucker
There are quite a few animals with the ability to suck food through tubes. Humans for example can do this.
some animals have to hunt for their food and on the other hand they have to be eaten to make other animals food
Most animals get their food from hunting. Most baby animals get their food from their mum.
animals safety
they suck blood off animals :)
it can attach itself to animals such as a shark and suck on its tissue and suck out its organs for food! sorry if its not the best answer but i tried.
I think blood... they do suck blood out of people and animals...
Animals around the area. You could list them all you have to learn for yourself suck in sucker
Seahorses can suck up small animals like kril with a filtering vacuum in their head.
There are quite a few animals with the ability to suck food through tubes. Humans for example can do this.
Hemiptera, or the true bugs, can only accept liquid food. They pierce a plant with a proboscis, a modified mouth-part that allows them to suck up liquids.
They have a vacuum cleaner-like snout. They suck in their food as it swims by. You can find a lot of information on seahorses at the link below.
whales suck in their food
they open their mouths to suck in food.
They suck in water and the food flows in with it.
that you suck!!!!!!!!!!!!!!!!!!!!!!!!>:)