Lump didn't start out as Picasso's dog, Lump was David Duncan's dog. David Duncan was Picasso's photographer and wrote several books about Picasso (highly recommended). David brought his dachshund by when he visited Picasso in the south of France, and the two fell in love (Picasso and Lump, that is).
Read the full article below, but here is my favourite quote:
Lump and Picasso remained friends for the rest of their lives. Lump lived to 1973 reaching the ripe old age of 17. Picasso died ten days later.
Duncan’s Dog meets Picasso - Lewis Art Café (lewisartcafe.com)
