WARTHOGS INCLOSURE
OUTDOOR ENCLOUSERS
CASE STORY FROM AALBORG ZOO

År: Juni 2025
Category: Small size Enclosure
Animals: Amadillo
Indoor Area: 10m²+
Total Substrate Depth: 25cm+

Why switch to Biobed?
In spring 2024, Aalborg ZOO replaced the soil substrate with Biobed for their warthogs and Swedish mini pigs. The main reasons were to keep their wallow moist so the animals had something to bathe in, and equally important, to provide enrichment by allowing them to dig in the substrate without it becoming compacted and hard.
Structure of the Biobed layer
The substrate layer (40–50 cm) consists of very coarse Biobed material, which has a strong structure and therefore does not compact. This gives the animals ample opportunity to dig in it. The depression in the middle is approximately 50 cm deep and is filled up to the edge.
The Biobed ZOO XXL type has been used – a type specially developed for very large animals and also applied in outdoor enclosures for digging animals.
From sand/soil to Biobed
One advantage of switching from sand or soil is that sand/soil can become extremely compact over time as the animals constantly walk on it. Because Biobed contains a high proportion of wood chips, it provides a softer and more forgiving substrate for the animals.
Biobed will also naturally attract worms and insects that the pigs can forage for and eat. Additionally, sand is a non-renewable resource and therefore not a sustainable solution.
Observations
Both warthogs and mini pigs spend a lot of time rooting in the substrate, which serves as natural enrichment.
Contact for more information
Morten Jørgensen, Ny Vraa
M: 45553872
E: msj@nyvraa.dk