- Angora Goats
- Angora Goat
- Angora goat
- Angora Buck
- And still looked directly in my eyes
- And from that hour they were fast friends
- Anatifa lævis
- Anaconda
- An Old Monarch
- An Eight-Armed Cuttlefish or Octopus Attacking a Small Crab
- An anatomical diagram of about 1298
- An Amphipod (Gammarus locusta)
- An American tarantula
- American Pintail
- American Merganser, Male
- American Merganser
- American Luna Moth
- American Goldfinch
- American Coot
- Alpine hare or Snow Hare
- Aloe Globuligemma
- Aloe pretoriensis
- Aloe Pienaarii
- Alligator
- Alderney Cow
- air ships of the milkweed
- Ailuropus Melanoleucus
- Agapanthus Umbellatus
- Agalenidæ
- Agalena and Her Funnel-Web
- African Snake-necked bird
- African Okapi
- African Fat-Tailed Sheep
- Affection
- Aëdes calopus; larva
- Advancing, ... her clear eyes fixed on mine
- Adenium multiflorum
- Adaption of Horned Poppy for needlework
- acorn
- Acokanthera spectabilis
- Acanthus latifolius (lusitanicus).
- Aardvark
- A. Head of a typical Moth
- A Woodlouse (Porcellio scaber), One of the Isopoda
- A Wolf
- A wolf
- a witch-hazel branch bearing both flowers and fruit
- a wing to the seed
- a white Persian - Muff
- A whip-scorpion
- A Well Shrimp (Niphargus aquilex)
- A tumbling Ape
- A true scorpion
- A Toad
- a strange and terrible fruit
- A solpugid (Eremobates cinerea)
- A Sly Couple
- a single seed sailboat of the dandelion
- A sheep taking in the view
- A Select Committee