Hyenas at Artis :
In its long history Artis has kept all 4 Hyena-species and because the information on ZTL is again not complete / incorrect I will try to give a better overview of the history of Hyena's at Artis althrough I have to commit that also in my information there still is a lot missing / unknown to me and any help to complete th information is welcome !
- Brown hyena : During the summer of 1863 2 Brown hyena's arrived at the Zoo and a note from Artis says : "all hyena-species are now in the collection" which would mean that also Aardwolf, Striped and Spotted hyena's were kept in 1863 !
ZTL only mention 'at least till 1950' and that during 1950 a male was send to Basel Zoo.
- Aardwolf. Next to the note that all Hyena-species were kept in 1863 I have no real proof that this species was kept at Artis that year and in a note from 1921 its said that in the summer of 1921 the first Aardwolf in the history of Artis arrived and published a photo of the species :

Aardwolf at Artis - 1921
On ZTL this species isn't mentioned at all for Artis.
- Striped hyena : ZTL only mention : " at least around 1911 and 1970".
Wasn't able to find information about the 1911-claim but I know 2 were kept at the zoo in 1938.
The species was also bred succesfully at Artis :
1966 : 4 young hand-raised :

4 hand-raised Striped hyena's at Artis
1967 2 young
1968 3 young hand-raised
- Spotted hyena : here ZTL says : "at least beginning of the 1970s till 199?" .
As said Artis claimed to have had all Hyena-species already 1863 but the first 'real' proof I found for the year 1929 by a photo of this species :

Spotted hyena at Artis - 1929
In the 1950s the species was bred succesfull at Artis :
1954 : 3 cubs from which 1 was raised by the mother and 2 by a foster-dog
1959 : 1 cub
1960 : 2 young hand-raised
1961 ; 2 young hand-raised
For the moment I don't have further information about the Hyena's and anybody who can help with extra information, please add it to this thread !