- Zebu
- Zebra with young
- Zebra with young
- Young Specimen of an African River Crab
- Young Persian Kitten
- Young Half-breed (Buffalo-Domestic) Bull
- Yellowthroat
- Yellow-shafted Flicker
- Yellow-headed Blackbird
- Yellow-green biting adder
- Yellow-breasted Chat
- Yellow-billed Cuckoo
- Yellow Warbler
- Xenopsylla cheopis, male
- Wreathed Weaving Spider
- Wounded lion
- Woodpecker drilling a hole for a nest
- Wood turtle
- Wood Thrush
- Wolves hunting a deer
- Wolves
- Wolf Head
- Wolf Head
- Wolf
- Wolf
- Wing of a Bird, Showing the Arrangement of the Feathers
- Wilson’s Warbler
- Wilson’s Snipe
- Wilson’s Phalarope
- Wildebeest
- Wild Cat shown at the Crystal Palace Cat Show, 1871
- White-Eared Antelope (A. leucotes), Male, Central Africa
- White-crowned Sparrow
- White-breasted Nuthatch
- White Persian - 'Lambkin 2'
- White Persian 'Tim'
- White Persian 'Miss Whitey'
- White Pelican
- White Cat, winner of many prizes
- White cat - prize winner in 1879
- White Angora
- What is it
- Well-marked Silver Black-banded Tabby
- Waterbuck
- Waterbok (Antilope [Kobus] ellipsprymna, Ogilby)
- Water flea
- Warbling Vireo
- Wandering Crab Spider
- Walrus, showing the upper incisors in the form of tusks
- Walrus skull, showing the powerful canine teeth
- Wall gecko
- Wading Birds
- Volvox
- Virginia Deer
- Viper
- Violets
- Vicuña
- Vesper Sparrow
- very Light Blue Tabby, 'Sylvie'.
- Vertical section of the skull, showing the sinuses of the dura mater