There are no 9-letter anagrams. As many as 170 shorter words can be made using the letters, the longest being anteater and entreats (8 letters).
Other words include earnest, nearest, restate, tartans, Easter, rattan, teaser, and tester.
Other words you can make from the word "word" includes: Do Dow Or Rod Row
Words from the letters "make" include:ammame
There is not specific collective noun for anteaters, most likely because anteaters are solitary animals. However, if you need a word for a group of anteaters, a noun suitable for the context is used, for example a pair of anteaters, a family of anteaters, etc.
The word juices is the longest word you can make with that combination of letters. Other words include I, is, use, and ice.
Danger
Destination
Antler
garder
The only other word to make with the letters 'cow' is ow.
pics
care,rape
pig, sip, is