There seems to be something awry with the behaviour/FSM of the various ambient animals with recent dev builds.

createAgent ["Goat_random_F",position player, [], 0, "NONE"];
This code spawns a goat near the player. Previously, this goat would then wander around grazing and doing goatlike things. With the latest dev builds the goat behaves normally for a few seconds and then freezes.

createAgent ["Hen_random_F",position player, [], 0, "NONE"];
Chicken freezes after a few seconds same as the goat.

createAgent ["Sheep_random_F",position player, [], 0, "NONE"];
The spawned sheep now runs around endlessly, never stopping.

createAgent ["Fin_random_F",position player, [], 0, "NONE"];
Dog never actually moves anywhere, but is not frozen.