Don't feed the animals.
Dōbutsu ni esa o ataeru na.
at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although
(animal) feed; fodder; bait; lure; enticement
indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
to give (esp. to someone of lower status); to bestow; to grant; to confer; to present; to award; to provide; to afford; to offer; to supply; to assign; to cause; to pass (a variable to a function)
(sentence end, mainly masc.) indicates emotion or emphasis; (used with masu stem verb) command; (used with dictionary form verb) prohibition