Ik denk niet of de aggressie iets met de eikels heeft te maken...tenzij je honden zich niet lekker voelen omdat ze eikels hebben gegeten en pijn in hun buik hebben..
Als 't mogelijk is, dan zou ik ze liever bij de eikels vandaan houden..
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OAKS :Toxic Parts: Foliage and acorns.
Symptoms: Affects kidneys gradually. Symptoms appear on after days or weeks.
http://www.ou.edu/oupd/plantsma.htm
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Acorns are edible, but often contain large quantities of bitter substances. White oak acorns usually have a better flavor than red oak acorns. Gather and shell the acorns. Soak the acorns in water for 2 to 7 days, changing the water twice daily, to remove the bitter substance. Boil the acorns or grind them into flour and use the flour for baking. Tannic acid gives the acorns their bitter taste. Eating an excessive amount of acorns high in tannic acid can lead to kidney failure. Before eating acorns, leach out this chemical through soaking.
http://www.rmru.org/faq44.htm