Yes, it was Pamela Jekel’s book. Here’s what I’ve found.
To digress, I used to be a professional librarian, and I love reference questions.
I don’t suppose that anyone in the FWG is interested in Kipling’s first editions, since they’re extremely expensive today; but for the record:
“The Jungle Book”. Illustrated by J. L. Kipling, W. H. Drake, and P. Frenzeny. Macmillan & Company, June 1894. xii + 212 pages.
Contains 7 tales, including 3 of Mowgli, the feral man-cub of the Indian jungles. Others include “The White Seal” (seals), “Rikki-Tikki-Tavi” (mongoose & cobras), “Toomai of the Elephants” (elephants), and “Her Majesty’s Servants” (British Army pack animals).
“The Second Jungle Book”. Illustrated by J. Lockwood Kipling, C.I.E. Macmillan & Company, November 1895. vi + 238 pages.
Contains 8 tales, including 5 of Mowgli and his animal companions. Others include “The Miracle of Purun Bhagat” and “Quiquern” (both non-anthropomorphic), and “The Undertakers” (river scavengers).
Here is a more detailed description of Jekel’s book, that I had remembered as being pretty good:
“The Third Jungle Book”, by Pamela Jekel. Illustrated by Nancy Malick. Roberts Rinehart International, November 1992. 217 pages.
Contains 10 new adventures of Mowgli, Bagheera, Kaa, and the others, including such new characters as Ikki the porcupine and Gargadan the Indian rhinoceros. The last story ends with the birth of the adult Mowgli’s child, and the old-age death of Baloo.
Two other pertinent titles are adaptations of Walt Disney feature films that were published at the time of the movies’ releases, and are long out-of-print today:
“The Story of Walt Disney’s Motion Picture: The Jungle Book. Adapted from the Mowgli stories by Rudyard Kipling”, by Mary Carey. Illustrated. Whitman Publishing Company, October 1967. 190 pages.
Shere Khan, the tiger (which is “tiger king” in Hindi), hates man. He comes to kill Mowgli, the man-cub. The wolf pack decides that Mowgli must return to the man-village for his own safety. Prudent Bagheera and carefree Baloo escort him back, despite his objections and jungle dangers.
I haven’t read it in almost fifty years, but I remember being impressed that it wasn’t as juvenile as I had expected.
“The Jungle Book. Based on the script by Stephen Sommers; based on the novel [sic.] by Rudyard Kipling”, by Mel Gilden. Illustrated with stills from the movie. HarperPaperbacks, December 1994. 130 pages.
The novelization of the Christmas 1994 live-action movie, “Rudyard Kipling’s Jungle Book”. The animals are not anthropomorphized.