I seem to be late today but intended to post this :-
There’s two of those little corners that I hate today – Top left and bottom right. So some clues if you are stuck.
1dn is A three letter fish with the first letter repeated.
10ac four inches is used to measure the height of horses.
22ac I think the doctor is an animal doctor (almost – use the first two letters.
19dn (if I’ve got it right) only parses the first letter but the whole is a yellow colour(ed earth)