1. European Moose*
2. Roe Deer
3. European Forest Reindeer
4. Pére David's Deer
5. Tufted Deer
*regrettably, I am going against my core values of avoiding americanisms wherever possible, because 'moose' sounds better than 'elk,' and avoids confusion with wapiti.
I expected this would be a challenging list to compile as I am not all too knowledgeable on deer, but when I sat down and made a list it came to me straight away, as these five species definitely interest me a great deal more than the rest.
The moose are probably one of my favourite ever animals. I couldn't tell you what it is but they have fascinated me since a child. I miss the days of seeing them regularly at Whipsnade, and they are probably part of the reason that I fell in love with the place as much as I did. It was such a pleasure to be 'reunited' with the species after so many years at Prague last summer, and I only hope that one day, somewhere more local will grant me the privilege of being able to see them often once again. Roe Deer were also an easy shout for second place due to many fond memories of seeing them in the wild while cycling through Germany and Czechia. Third place comes down to my childhood love for London's reindeer, and as such the delight that I felt upon seeing the wild variant for the first time at Highland WP not long ago, and the further delight realising that Whipsnade recently acquired some (not quite a moose replacement, but close). Fourth place is yet again due to fond Whipsnade memories, both seeing them myself at said collection, and reading about how working with them there in part inspired Gerald Durrell to pursue conservation to the level that he did in 'Beasts in my Belfry.' Finally, the Tufted Deer placement is, believe it or not, nothing to do with the ZTL-inspired rumours that Whipsnade has just acquired some, but instead is simply due to how those bizarre fangs, and the extent to which said fangs caught me of guard when seeing the species for the first time at Magdeburg, a complete surprise lifetick.
Honourable mentions would be Chinese Water Deer and Reeve's Muntjac, due to fond memories of searching for the free-roamers at Whipsnade, Axis Deer / Chital due to their striking appearance and although I am yet to see them, any of the other Moose subspecies.