Games like Doggy Up!
Games like Doggy Up! include Portal 2, Portal, The Big Catch: Tacklebox, Refunct, and Tinykin. We matched them by the tags players give Doggy Up! on Steam (Precision Platformer, 3D Platformer, Puzzle Platformer, Hidden Object, and Puzzle): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Puzzle · Platformer · Puzzle Platformer

Portal
Shared: Puzzle Platformer · 3D Platformer · Puzzle

The Big Catch: Tacklebox
Shared: 3D Platformer · Precision Platformer · Platformer

Refunct
Shared: 3D Platformer · Parkour · Puzzle Platformer

Tinykin
Shared: 3D Platformer · Puzzle · Cute

Tomb Raider IV-VI Remastered
Shared: 3D Platformer · Puzzle · Precision Platformer

A Hat in Time
Shared: 3D Platformer · Cute · Platformer

Human Fall Flat
Shared: Puzzle · Puzzle Platformer · Funny

Chained Together
Shared: Puzzle Platformer · Platformer · 3D Platformer

Myrmidon
Shared: Puzzle Platformer · Precision Platformer · Puzzle

Trine 3: The Artifacts of Power
Shared: Puzzle Platformer · 3D Platformer · Puzzle

Toree 3D
Shared: 3D Platformer · Platformer · Precision Platformer

Pseudoregalia
Shared: 3D Platformer · Parkour · Platformer

SEUM: Speedrunners from Hell
Shared: 3D Platformer · Precision Platformer · Parkour

Only Climb: Better Together
Shared: Precision Platformer · 3D Platformer · Platformer

Get To Work
Shared: Precision Platformer · 3D Platformer · Funny

Penny’s Big Breakaway
Shared: 3D Platformer · Platformer · 3D

Sonic Adventure DX
Shared: 3D Platformer · Platformer · Adventure

Neon White
Shared: 3D Platformer · Parkour · Platformer

The Last Campfire
Shared: Puzzle · Cute · 3D Platformer

White Knuckle
Shared: 3D Platformer · Parkour · Precision Platformer

The Plucky Squire
Shared: 3D Platformer · Puzzle Platformer · Cute

SpongeBob SquarePants: Titans of the Tide
Shared: 3D Platformer · Platformer · Puzzle Platformer

Sonic Frontiers
Shared: 3D Platformer · Open World · 3D