Two playful goats butting heads on a tree stump at the Zagreb Zoo, Croatia

goats playful tree stump zagreb zoo croatia animals zoo interaction horns brown goats enclosure wooden fence greenery outdoor nature wildlife domestic animals cute fun behavior natural habitat mammal goat play dynamic movement animal behavior summer daytime park visitors kid goats young goats animal interaction domestic wildlife forest green background zoological park conservation natural environment farm animals exhibition fenced area head butting fighting teasing goat enclosure natural light domestic species zoo visitors