The cat's toys win on scent, not shape
Your dog knows exactly which toys are hers. Identical shape is almost irrelevant to her, because she sorts the world mainly by smell. The cat's mouse, ball, or crinkle toy is saturated with cat scent, warmed from being batted around the house, and often faintly marked by whatever room the cat claimed that day. Her own toys, by contrast, smell mostly of her and of your laundry basket. To a nose-led animal, the cat's version is the seasoned, storied object, and hers is the plain one she has already solved.
There is also a social layer. She has watched you react when she picks up a cat toy. You look up, you follow, you negotiate. A toy that reliably summons the whole room is worth more than one that earns no comment at all.
Why everything ends up in her bed
Carrying the prize to her bed is the second half of the behavior, and it matters. A dog bed is a private storehouse — the one place where collected things are unlikely to be taken and where she can lie among them. Many dogs gather valued objects before settling, mouthing and arranging them as part of winding down. If she also tucks the toys under her body or sleeps with a paw over them, she is guarding a small treasury, not preparing to destroy it.
Watch whether the collecting stays relaxed. A loose body, soft eyes, and willingness to trade for a treat point to happy hoarding. Stiffening, hard staring, or growling when you or the cat approaches the bed is different, and that version needs a calmer management plan and, if it escalates, a conversation with a qualified trainer or your veterinarian.
Make her own toys interesting again
Novelty is doing most of the work here, so borrow it back. Keep only three or four of her toys down at once and rotate the rest from a closed cupboard every few days, so a returned toy smells less familiar and gets investigated like a new arrival. Play with her using her toys — a toy you animate, toss, and tug becomes socially charged the way the cat's toys already are, while a toy that only ever sits in a basket stays dull.
Give the cat a protected play zone too. A room with a door she cannot push open, or a high shelf circuit for the cat's favorites, removes the easy raids without turning the house into a constant policing exercise. When she does arrive proudly with a cat toy, trade rather than chase: offer one of her rotated toys or a small treat, take the cat's item without ceremony, and put it back in the cat's space. Chasing turns theft into the best game in the house.
A household routine everyone repeats
This behavior fades fastest when every person responds identically — same trade, same quiet removal, same cat-only shelf. One family member who squeals and pursues her teaches the opposite lesson from everyone else's calm swaps, and dogs learn the exciting version fastest.
Note which toys she targets, when the raids happen, and what trade worked, so the pattern is visible instead of argued about from memory. KinsLe Care Teams lets you assign that toy-rotation and trade routine as a shared duty for her, with completed turns marked by a timestamp, so the cat's shelf gets restocked and her own toys keep cycling no matter who is home.