Blood

Obvisously bad sign, bringing possible death in family or relatives, probable problems, accidents, illnesses and more such "good" things. But there are some modifiers applied on it, connected by different situacions in which you can see blood or bloody things. Lets Look onto it:
Black blood see: Serious illness.
Red blood: Joy.
Spill much blood: Wealth.
Bath in blood: You will suffer greatly.
On ground: Crime.
Drink: Money.
Spit: Enemies vilify you.
Clean: Place you are is connected with crime.
Bleeding from nose: Problems in family.

Tree

Its pretty often, when you see trees in dreams. but what they means? lets look at it. This is but just about lonely trees, nto whole forrest.
See tree: Life.
Big healthy tree: Long life to you.
See dead tree: Bad sign.
Tree with strong branches: You family will strenghten.
Tree without leaves: Dead of son.
Climb on tree: Beware of enemies and envy.
Fall from tree: Take care of health.
Snake on tree: Really bad sign.

Animal

Animal seen: Brutality and fear.
Little animal: Nice fate.
Wild animal: Dangerous path.
Pet animal: Hope.
Bitten by animal: Beware.
See sbdy killed by animal (s): Beware.
Running animal: Pray and hope.