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MGA GrossMos Dino Pack Series 1, Ages 4+

Free shipping on orders over $29.99

$6.89

$ 2 .99 $2.99

In Stock
  • The Ultimate Prehistoric Play Experience….​ GrossMos combines the thrill of unboxing with surprises!
  • Fizz and slime combined with building your very own hidden dinosaur! Totally Gross!
  • Interactive play stimulates imagination and creativity and provides a unique sensory experience for kids.
  • Collect them all!


Add water and watch as the dino begins to foam at the mouth… ​Pry open the jaws and excavate bones to assemble a smaller dinosaur…​Once assembled feed them the toxic sludge and then squeeze the body to see where the green slime shoots from!


nanci
Reviewed in the United States on January 4, 2025
All diff Dino’s came, and did different things when fed! The ONLY con was the mouth didn’t pop open as we expected. And 2 Dino’s were rubber, the trex was firm! Very cool toys though.
Crystal Blake
Reviewed in the United States on January 4, 2025
Fun toy. Supposed to foam out of the mouth but for some reason ours was foaming out the back of the head. Pretty cool. Son loved it. Cute little dino inside. Got it on sale so good value. I don't think I would pay full price for it.
Siobhan
Reviewed in the United States on January 23, 2025
I misunderstood and thought there were multiple dinosaurs with this order. Only one dinosaur comes with it. It was still a fun gift, but I think the picture is deceiving.
Athena T
Reviewed in the United States on January 20, 2025
Gift recipient loved this toy!
luv2bcaitlin
Reviewed in the United States on January 2, 2025
The best part about this toy is the cool dinosaur skull package. That’s it.First off to rip the eye socket out was very difficult for my 5 year old to do. For a kids toy, a kid should be able to do it.Then it says about 2oz of water. You need way more than 2 oz for anything significant to happen.After opening the mouth you get pieces of a dinosaur you have to put together. Here’s where the problem really lies. The dinosaur is not hard plastic, it’s more squishy and is extremely hard to get these legs to stay on the thing. Again considering this is a child’s toy, I couldn’t get the legs to stay on for the life of me. It’s like whoever’s idea this was never even touched the toy and realized this was more trouble than not.The “slime” that you “feed” to the dinosaur was very runny and not slime like at all.Did my son enjoy it? Sure.Did it last a while? No.Would I ever buy again? No.Was it a big ole mess? Absolutely.Any of the toy worth saving? Just the packaging of the skull.Take it for what it is, there’s a reason these things are always on clearance for $6.
Cheryl
Reviewed in the United States on January 17, 2025
It was a fun activity. Instructions were clear and easy to follow. Kids favorite part was the slime!
Norma
Reviewed in the United States on January 13, 2025
My 13 year old still enjoys these.
Kim Wright
Reviewed in the United States on December 30, 2024
Gift for grandson (age 7). He kept discovering all the goodies inside. Great for something different
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