Fish.
buffalo,cattle, zebras, sheep, goats, elephants, antelope, etc.
An ethnologist studies the behavior of animals. How much they travel depends upon their field of interest, but almost all of them travel to at least yearly meetings, etc.
No. Sloths are solitary animals. Adults only get together for the purpose of mating.
There is no term to describe a group of lemmings. This is because they are normally solitary animals and do not travel in groups or packs.
wolves & rats. sometimes people.
Yes, kangaroos tend to travel in "mobs".
One is Dinnerbone which causes the mobs to turn upside down, but I'm not sure if there is a second one.
Yes. Red kangaroos travel in groups known as mobs. These groups can range from just a few kangaroos to herds of hundreds.
Yes, as well as animals, people/players and sometimes other objects if they glitch.
Kangaroos such as Red kangaroos, Western Greys and Eastern Greys live in a mob, troop or herd. Wallabies also live in mobs or colonies. Unlike their ground-dwelling counterparts, tree kangaroos are generally solitary animals.
Friendly mobs are animals or creatures that don't attack at sight. Ex. Pig, sheep, cow, chicken, and squid. Also, wolves won't attack unless provoked. Same goes for spiders during the day.
When it explodes it will not do any block damage but will do damage to other mobs, animals and or players.
No mobs will spawn on peaceful, you may hear noises but they will be effects even on peaceful. the only entities that spawn in peaceful (not including the nether or the end) are players and animals unless, in the end or nether.
mobs
They can be, although the term "troop" is not generally used. Kangaroos live and travel in mobs, herds or troops. The most common term is "mob".
Kangaroos live in groups of ten or more called mobs. Living in a group means that there's protection for the weaker members. Another advantage is that some kangaroos can act as lookouts as the others feed or relax.